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Introduction Since the development of radar in 1940's, many research works on radar cross-section (RCS) management and reduction have been carried out in the field of electromagnetic community.
The difference between the by calculated and by experimented were maybe caused by the difference of the electromagnetic parameter, the thickness and the location of CAS between the reality and the data 8 1012141618 -40 -30 -20 -10 0 10 2 1 R/dB frequency/GHz 1by caculated 2 by experiment 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 -16 -14 -12 -10 -8 -6 -4 -2 0 1# R/dB D/mm by computed.

Results and discussion Biochemical evaluation of the seeded Bonelike  showed that human bone marrow cells proliferated during approximately three weeks and attained a stationary phase afterwards, as shown by the results concerning the MTT reduction and total protein content (Figs. 1 A and B).
Bonelike  is composed of an HA matrix with bioresorbable β- and α- tricalcium phosphate phases (XRD data not shown), which are more soluble than single HA and liberate Ca and P ionic species to the local environment.

The current traffic characteristics A survey was carried out to collect the data of traffic flow in peak hour on Tuesday.
The delay time is decreased by 17.8% compared to the previous situation and it has an obvious reduction.

Because of the small amount of feed, the feed force data is also smaller, the axis deviation of the hole in this case see figure 3.
This shows that: ①When decreasing the feed speed, the feed force reduction, so it can improve the linearity of the hole.

Figure.1 Reduction in the Stress Intensity Factor with Repair Method Optimum design consists in determining design parameters ( variables) that lead to the best performances.
The advantage of this method holds in its generality, indeed it can be applied for any case, in fact all what is needed is the data of the structure that needs to repaired.

Before meshing we consider not only material for unit types but also the miniaturization, weight reduction and cost requirements, we finally choose 6061 aluminum alloy .Related information is in the table 2.
（3）The experiment data shows that the total deformation of big arm bracket and the deformation of the manipulator end is small by calculating ,at the same time which provides great room for the improvement of control system precision of manipulator.

However, a reduction of its sizes to the nanometer scale introduces a significant change of the band structure.
The plotted data represent here measured SPV signal normalized to the light intensity for each wavelength.

We get the data from China Mobile that 200 BSs spend 30 millions in electric charge a month.
Maximum coverage radius [km] Number of active BS Total power of antenna [w] Total power of active BS Total power [w] 1.7 49 143.3 88200 88343.3 3 22 77.03 39600 39677.03 4 11 48.3 19800 19848.3 With the reduction in the number of BS, the total power of the antenna and the total power are in decline.

As can be seen, in Fig.2, the simulated profile is significantly closer to the experimental, with this reduction in step size that is 2mm per cycle.
（1） Simulated results show good agreement with experimental data for the geometry of the pyramid when the vertical step size is 2mm or 1mm per cycle.

The reduction of silica contained in the high alumina porcelain chamber by the hydrogen from acetylene.
The data points are in agreement with the Fowler-Nordheim equation [18-22].