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Online since: May 2014
Authors: Dong Wang, Jiang Wu
Intelligent Traffic Development, will led intelligent car, and navigation, and vehicles remote information system, and RFID, and traffic the basis facilities run of perception technology[3] ( such as intelligent road, and intelligent railway, and intelligent water transport channel), and their means of delivery and traffic the basis facilities communication technology, and their means of delivery and the same their means of delivery or different kind of their means of delivery communication technology, and dynamic real - time traffic information published technology such as more industry development, with widely application demand[4].
With the support of the Chinese government, Internet technology is growing, and smart traffic towards the development of large-scale, integrated, professional, services, and create greater social and economic benefits.
Online since: July 2014
Authors: Zhi Neng Tong
This work requires a professional, rigorous style, impartial organization that construction supervision units to bear.
For example, the material entering the next station sampling, review of the settlement monitoring data, process parameters of the test of bored piles determine the water spray test for aluminum window inspection and supervision, etc., should arrange for site supervision.
Online since: September 2011
Authors: Jun Qing Tan
As the largest ore slurry pipeline system,and the third iron concentrate slurry pipeline interiorly, include the longest water pipeline with only one pump station in China, Bayan Obo slurry pipeline engineering of Baotou has been operated.
It can transports 5.5 million tonnes of iron ore concentrate  and 2000 million m3/h of water per year.
Table 1 External diameter, Wall thickness, Length Type External diameter[mm] Wall thickness[mm] Length[Km] slurry f355.6 11.0~15.5 145.78 water f920 13.0~17.0 130.56 Table 2 Transport capacity(8000 hours operation per year) Type Every year[million ton] Every day [ton] Every hour [ton] Flow[m3/h] slurry 5.50 16500 687.5 509.9 water 20.00 60000 2500 2500 The earliest planning of this project was prepared in 2005, started in 2007.Well in 2008, formally began on April 12th.August 14, 2009 hydro test success,and on December 23, 2009 draw water went up into the high tank, pulp landed in January 4, 2010.
Fig. 4 Inside pressure curve of ore slurry pipeline Fig. 5 Inside pressure curve of water supply pipeline Fig. 6 Network diagram of pipe welding (miniutes) Fig. 7 Optimization of welding network pipeline down into the ditch Because there is no professional sideboom tractor, in order to put the pipe into the ditch, a method for specific construction with three sets of 50T crawler crane and 1 shovel was leaded in adoption by CSMCC.On this basis, a set of results are applied about the long distance pipeline large deformation theory and structural mechanics, construction scheme has been improved and adjusted by CEEC. 50T crawler crane increased to 4 sets, the shovel increased to 2 sets ,prescribed a limit to maximum hookon height and Minimum hoisting spacing.This newer scheme has better stability, higher security, faster speed ,the average speed reached 1 km every day.Show in fig. 8, and fig. 9.
The upper limit is 90 percent of the yield strength.The highest test pressure reach 28. 3 MPa, The test pressure of the special ellipsoidal head reach 34.5 MPa.According to the source of the water, The slurry pipeline is divided into seven section, the water piping is divided into five section, table 9 and table 10 gives the test pressure of each segment, when the testing runs, a blowout and a weld leakage appeared,then after the welding again,the second pressure testing was satisfied.Shows in fig.11 and fig.12.
Online since: October 2014
Authors: Xiao Zun Zhang
Easy to joint is broken down by ultraviolet (uv) light, not easy, easy oxidation. 5) PA (polyamide, Nylon Nylon) Properties: the crystalline hot plasticity plastic, have obvious melting point, Nylon6 Tm is 220 ~ 230 ℃, compared to 260 ~ 270 ℃, Nylon66 Nylon itself with suction base reason has water imbibition, forming, drying, before high temperature drying grain of discoloration is Nylon.
Water resistance, drug resistance, electrical properties, excellent soft (LDPE).
References [1] Shiyun Chen. industrial designer has the plastic material processing professional knowledge of the scope of the study.
Online since: July 2014
Authors: Li Hua Yang, Heng Wang, Zhi Guo Han
With the requirements on the full use of architectural space and the high-rise buildings built, most of the buildings have basement which is not only one layer, leading to the bottom of the basement level is far lower than the perennial ground water level, especially in the coastal areas or areas along the river, obviously groundwater play a important role in structure.
Phenomenon of up-loating accident After the accident, the damage detection of structures was detected by professional and technical personnel.
(1)Partial non-construction of anti-floating anchor rods The non-construction works of section C,such as non-beam –slab of patio of the first floor underground , anti-floating anchor rods lying in the bottom of the sight-seeing lift and the construction area of tower crane close to patio, could be deemed as the starting point of upwards-floating , especially when the water level rises ,which could give rise to the partial floating
Online since: July 2012
Authors: Chang Qing Fang, Shuan Fa Chen, Zeng Ping Zhang, Jian Zhong Pei
They have received much attention because of their outstanding physical properties including low water absorption and low outgassing.
The cured specimens were removed from the mold and cut with a water coolant to required sizes: 15 mm×10 mm×4 mm (type I) and 27mm×27mm×4mm (type II).
Hamerton: Chemistry and Technology of Cyanate Ester Resins (Blackie Academic & Professional, Glasgow, London, 1994)
Online since: March 2014
Authors: Xuan Wu, Qiong Yan Li, Min Chen
Example Figure 1 is an image of gully erosion in a road, which is from School of Soil and Water Conservation, Beijing Forestry University.
Bulletin of Soil and Water Conservation, 2010, 30(2):177-179
Journal of Soil and Water Conser- vation, 2006, 20(5):116-120
Journal of Soil and Water Conservation, 2004, 18(4):16-19
Journal of Soil and Water Conservation, 2004, 18(5):91-94
Online since: July 2022
Authors: André Paulo de Almeida Whiteman Catarino, Marina Hammes de Carvalho
Most infant deaths happen in swimming pools and hot tubs, as well as open water recreational activities [7].
One justification for this non-use is that the products available on the market are specifically intended for times of water activities.
The perception of the majority is adequate, as situations of leisure close to water environments are not restricted to seasons.
The universe of fashion design, especially for children, is a field of science that brings new approaches and not only the general public is unaware of product trends for these segments, as well as fashion professionals.
However, they need to be positioned in a place where they have contact with the water so that their drive is quickly shaped.
Online since: March 2015
Authors: Chun You Wu, Lan Lan, Xu Zhao, Feng Ding
Traditional logistics brings damages to the environment, such as climate change, air pollution, water pollution, etc.
Acceleration of transformation and upgrading The capability of professional service in logistics industry has been promoted, and the management of supplying chain has developed a lot.
Online since: March 2012
Authors: Jun Liu, Jian Ying Liu
Professional design, stable beam quality and effective transmission, safety and free maintenance. 2.
Accidents are avoided with the chain protection of water-air-light and the requirements of safety operation are achieved.
Integral cold water cooler satisfies the requirement of cooling water when laser continuous work 24 hours, meets the requirement of cooling water for processed machine, outer light path, the reflector of laser, and the output of window. 2.
It has special refrigeration control circuit, high precision temperature control and the real-time display function of water temperature, double temperature control, automatic high efficiency and low noise operation.
Low temperature water is supplied for cooling laser, which can ensure laser stability, efficient operation; Normal temperature water is supplied for cooling the entire outer light path optical element. 3.
Showing 1971 to 1980 of 3724 items