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In high speed ball-end milling hardened steel, the increase of hardened steel hardness and cutting efficiency make cutting loads changing, and fuzzy and uncertain properties exist in evaluating cutting vibration and machining surface quality.
Grey incidence matrix of high speed ball-end milling characteristic reveals the interaction level of characteristic and influencing factors.
At present, there are few researches on influence of parameters interaction on the process of high speed milling, fuzzy and uncertain properties exist in evaluating the performance of high speed ball-end milling hardened steel [8], it is necessary to probe into the characteristic and influencing factors.
The results show that there are the different levels of interaction among the characteristic and influencing factors in high speed ball-end milling hardened steel, and fuzzy and uncertain properties exist in evaluating the interactions because the information of behavior and control parameter is imperfection.
Row spacing and inclination angle are important factors affecting the characteristic of high speed ball-end milling hardened steel.

Ethyl cellulose(EC) has been widely used as hydrophobic wall materials for extended drug release application due to its prominent properties of good chemical stability, film forming, biodegradability [2].
Several methods of fabricating drug-loaded EC microcapsules, including coacervation [3], spray drying [4], and oil-in-water emulsion (solvent evaporation method) [5] have been investigated, and the factors affecting the drug release profiles have been studied.
The size and morphology, synthesized by solvent evaporation method, can be affected by numerous parameters.
It was noted that the core to shell ratio (mass ratio) was generally a factor of crucial important influencing the size and morphology of microcapsule.
Therefore, it is very important to prepare microcapsules with appropriate mechanical properties and wall thickness.

In aluminum alloy chemical plating process, temperature is one of the most important factors which directly affect the coating speed and quality.
With the change of temperature with speed, so temperature is an important factor which affect the deposition speed.
It is a good surface treatment which has become the important mean of improving the surface properties of aluminum and aluminum alloys currently.
The specific processes of aluminum alloy electroless P-Ni: mechanical polishing-chemical degreasing- alkaline etching（10%NaOH- cold water- mixed acid etching- cold water- the first dip zinc- washed- stripping dip zinc coating- washed- the second dip zinc- washed- pre- plating- thin Ni-P alloy- hot water- plating high phosphorus Ni- P alloy- hot water [6].

Introduction In recent years, safety mining activities affected by the high earth temperature, high underground stress, high hydraulic pressure of the karst and mining disturbances under the conditons of deep mining. and high-pressure groundwater pressure, underground stress, and mining disturbances are the main factors that affect the underground surrounding rock stress and deformation in deep mining.
In fact, mutual restraint and mutual influence between this three factors, finally, groundwater seepage field and the deformation of the rock stress result in groundwater-solid coupling effect[1].
And the“▽P”reflected the impact of the water seepage field in solid skeleton, its essence is that the pore pressure generated in the fluid flow affected the stress field of the solid skeleton, thereby affecting the deformation of the solid skeleton.
Establishment of model Underground mass rock physical and mechanical properties parameters in the model shown in Table1.
[8]. 2004,29(2):182-185.YIN Shang-xian,WU Qiang.Hydrogelogical and mechanical basics of water inrush from karstic collapse columns in Northern China[J].

Several design recommendations and construction measures about reinforcements and some sensitive factors mentioned above are proposed to control cracks.
Causes analysis of cracks Box girder cracks are caused by many factors[1] which involve prestressed elements such as longitudinal strand, transverse strand, vertical tendon, box girder factors such as shear lag, warping, distortion, torsion, load factors such as shrinkage and creep of concrete, bearing settlement, temperature gradient, dynamic load, configuration factors such as box girder height, span arrangement, web thickness, diaphragm set and the others, some cracks are the result of several factors.
The following two bridges with typical cracks are analyzed by finite element method to explore the crack causes and the relevant influence factors of large span prestressed concrete continuous box girder bridges.
Increasing a closed steel frame in the box room every 3 meters can improve the mechanical properties of the whole box girder(Fig.3).
The bottom plate mechanical properties are improved due to the increased vertical tension rod and anchorage beams.

The influence of the TiC concentration on the mechanical properties, as well as on the change in the mass of the samples, was revealed.
Currently, a large number of related studies have shown that the mechanical properties of steels and alloys can be improved by adding ceramic particles [4].
The influence of the TiC concentration on the mechanical properties, as well as on the change in the mass of the samples, was revealed.
Microhardness and tensile tests were carried out to study the mechanical properties of corrosion-resistant steel, as well as steel-TiC composites.
Mechanical properties.

The Interfacial transition zone is the weak links of concrete, it is a non-uniform system, and it can present the Macro-mechanical properties of concrete to a huge degree.
The decrease of the tensile strength in interfacial transition zone of concrete could due to these factors.
Supported By NSAF（Grant NO.11076023）2011.1-2013.12 References [1] MINDESS S, Tests to Determined the Mechanical Properties of the Interfacial Zone [A].In: MASO J C ed.
Summary of Mechanical Properties of Concrete Aggregate-paste Interfaial Transition Zone[J].Technology of Water Resours. 28(2)(2008)89-94
Standard Test Methods for the Mechanical Properties of Ordinary Concrete ,S.2003

Consequently, cermets with finer microstructure and better mechanical properties can be obtained [4-6].
This seems to provide a better mechanical performance [7].However, reports on the effect of Mo content on the microstructure and mechanical properties of cermets based in Ti(C,N) materials are almost inexistent.
Actually, the flexural strength is the most affected property.
However, this stability may be affected by several factors.
Zhang, Influence of molybdenum addition on the microstructure and mechanical properties of TiC-based cermets with nano-TiN modification.

When selecting the material, one should pay attention not only to the existence of a unique microstructure but also to other factors affecting synergistic dislocation and heterogeneous deformation-induced hardening.
In these works, regardless of the examined material, superior mechanical properties were reported.
As expected, ECAP processing increased the mechanical properties of thermally treated AlSi10Mg alloy.
Zhu, Heterogeneous materials: a new class of materials with unprecedented mechanical properties, Mater.
Kim, High-entropy alloys with heterogeneous microstructure: Processing and mechanical properties, Prog.

The rock breakage process is the interaction process between TBM and rock mass, which is affected by TBM specifications, such as thrust force, cutter tip width and profile, cutter spacing, RPM, and torque, and rock mass properties mainly including rock material strength, rock brittleness, joint spacing and orientation.
Based on a large number of single-factor cutting simulation, the influence of many cutting conditions such a blade angle, cutting depth and cutting speed on cutting property are discussed.
The input parameters for the rocks modeled in AUTODYN-3D were determined based on the measured rock properties.
The properties of the rock models were represented using a linear equation of state (EOS).
Table 1 Mechanical properties of the rock types modeled in this study.