查询词典 agate shell

Active component was easier enrichment to the surface of support and egg-shell distribution formed with the thickness of egg-shell more thinly under higher ph value of impregnation solution.

其中浸渍液pH值愈高，金属愈容易在载体表面富集，形成蛋壳型分布，且其壳层厚度愈薄；添加竞争吸附剂，可得到Pd或Pt在载体中呈蛋壳型、蛋白型、蛋黄型或均匀型几种不同均匀分布构造。

The shell is divided into orthogonal or oblique crossing girder systems, which make up a space rigid frame structure, then an analysis is made of the endogen force of the shell structure based on the curved lever space rigid frame structure.

该方法通过将壳体结构离散成相互垂直或斜交的曲杆梁系组成的空间刚架结构，进而分析曲杆空间刚架结构的内力，达到壳体内力分析的目的。

Your PATH is an environment variable for your shell, and changing it depends on the shell you are using.

你的PATH变量是你SHELL中的一个环境变量，对它的改变取决于你所使用Shell。

Then one solution would be for Shell to build at P,Esso to build as Q,B.P.as S,and Gulf at T,leaving either Shell or Gulf to build at R;however,if Gulf decides to back out of the whole agreement,then it is clearly impossible for the other three companies to erect the garages in the specified manner.

那么一种解决方法是Shell在P处修建，Esso建在Q处，B.P建在S处，Gulf建在T处，留下一个由Shell或Gulf建在R处；然而如果Gulf退出这一协议(在R和T建汽车修理厂)，则很显然，对其他三家公司来说，无论如何也不可能按照所约定的方式修建汽车修理厂。

It was shown that MFI/MFI core-shell zeolite with high Si/Al shell could be synthesized by using ethylamine rather than TPAOH as organic template under mild hydrothermal conditions.

考察了晶化温度和晶化时间对高硅壳层MFI/MFI核壳型沸石分子筛的合成的影响，其适宜的合成条件为晶化温度高于130 ℃，晶化时间19 h。

In order to demonstrate the practicability of construction excogitation,further to ensure the security of the design and construction,this paper analysed the stress conditions of large span reticulated shell-string structure through simulating the process of construction,monitoring the whole construction process and the complete status of the large span reticulated shell-string structure us.

网壳施工时的受力情况不同于设计状态，应用ANSYS中的生死单元法，对大跨度双层张弦网壳施工进行模拟分析，并对施工全过程进行监测，将模拟计算结果与监测值、设计值进行比较，验证施工方案的可行性，确保了网壳在施工时的安全。

Based on a series of signal process and noise source identification techniques, especially the major noise source identification methods, such as expurgation method, sound intensity analysis, spectrum analysis vibro-acoustic correlation analysis and so on, the pass-by noise control of SC7080A and SC6360B are studied in detail. By the roadway and dais experiments, the major noise and radiating parts are identified and some economical controlling methods are made. For the SC7080A, to control the emissing noise from the intake and shell vibration of air cleaner, a intake muffler is installed between the air cleaner and intake valve. Based on the theory of Helmholtz resonator, One three-parallel-connected resonant silencer is designed and trial-manufactured. For the SC6360B, the attenuation performance of exhaust muffler in high frequency region is improved. To reduce the vibration noise of shell part, the structure of oil sump tank, exhaust manifold shield and exhaust manifold shield are analyzed and improved. At the same time, some measures, such as sound absorption, sound insulation, are taken to reduce the noise of engine surface emissivity and a sound shield is designed.

本文首先综述了目前国内外汽车加速噪声控制的现状、主要方法和技术措施，在此基础上，结合SC7080A和SC6350B汽车的车外加速噪声水平及现状，综合运用分别运行法、声强法、频谱分析法、声振相干函数法等现代噪声源识别方法，对SC7080A和SC6360B汽车进行了准确详细的车外加速噪声源识别并提出了经济可行的控制方案，针对SC7080A，主要在空气滤清器和进气阀门之间的进气管道上加装进气消声器，抑制空气滤清器壳体表面和进气口两处的噪声辐射，根据Helmholtz共振腔原理设计了三腔并联旁支型共振消声器，并进行了工程化设计和试制；针对SC6360B，主要改善了排气消声器在高频段的消声性能，对罩壳类零件进行了结构改进，降低了其表面噪声的辐射，并对发动机舱进行了吸声、隔声处理，设计了发动机隔声罩。

The far field sound pressure levels of the cylindrical shell and spherical shell excited by an exterior point load are measured, and a good agreement between the theoretical results and the test results shows that the theoretical method and corresponding results in this dissertation are correct.

主要研究内容：(1)建立了考虑流固耦合作用并在流体流动条件下部分充液或者部分浸没圆柱壳体运动方程，应用波数域法和传递矩阵法得到了该类壳体振动响应的径向波数域速度，进而应用平稳相位法得到了该类壳体辐射声场的预估理论模型。

The shell of the liquid crystal auto-changing shade welding is made of high-performance plastic which is high strength and without leaking light. In addition to, by adding fire retardant and other special components , it has meet to the demand of inflaming retarding and could bear the high and low temperature .For resistance to impact, besides of choosing lightweight and high strength material, we also consider more in the aspect of the mechanics and human engineering in the design of the structure .In order to insure the comfort for wearing , we make the inside and outside protection piece and the shell of the face guard to a camber shape ,it also enhances the ability of resistance to impact.

液晶自动变光焊接面罩的壳体采用高性能的塑料注塑制作而成，高强度，不漏光，并通过在面罩材料里添加一定配方的阻燃剂和其他特殊成分，达到了阻燃和耐高低温等要求；为了抗冲击，除了材料选择轻质高强度材料外，在结构设计上更多的从力学和人体工程学方面考虑，保证了佩戴的舒适，而将内外保片与面罩壳体结合设计成能够最大承受外界力量的弧型，增加了面罩抗冲击能力。

Its external decorative shell is revealed, as book, making possible to personally become acquainted with the characteristic properties of motherboard through farsightedly made windows, and on the reverse side of shell is placed the photograph of motherboardand the description of its possibilities.

其外部装饰壳透露，为图书，使尽可能亲自熟悉的特性，通过主板目光远大，使窗口，并于背面壳放在照片主板描述其可能性。

The teacher likes the honeymouthed little girl very much.

老师很喜欢这个嘴甜的小姑娘。

Mr. Notker Bien's interests are traveling, spending quality time with the family and long-distance-running.

诺特卡·柏恩先生热爱旅游，长跑，以及和家人一起共度美好时光。