产生的

The theoretical foundation for further research is established. In chapter 6, the flow field of poppet valve and spool valve which are two kinds valve frequently used in hydraulic technique are predicated by finite element method. The flow field structure at different valve opening are illustrated by visualizing images. The effect on the flow noise and energy loss probably caused by vortexes is analyzed quantitatively, the flow channel of the valve is improved.

第六章用有限元方法对液压传动与控制中最常见的两种结构形式的液压阀—液压滑阀和液压锥阀流场进行数值预报，给出不同开口度和不同结构尺寸下流场结构的可视化图像，定性分析涡旋的产生对流体噪声及能量损失可能产生的影响，并对阀的流道结构进行改进。

Your coating of wax acts as a dry lubricant, it creates slip and decrease friction, if there is wax present on the finish, your towel will slip instead of grab and you wont' hear any noise, in other words, you won't hear any friction.

你的蜡涂层就像是一层乾的润滑剂，如果你的烤漆上是有上蜡的，它会产生光滑表面且降低磨擦力，你的毛巾将会在漆面上滑动而不会被漆面卡住，也不会听到任何的杂音，换句话说，你不会听到任何因为磨擦产生的声音。

The results show that nonlinear dry friction between mandril and tube conduces to the self excited vibration of tube and the drawing speed is the main factor which determines whether the mandril static balance is stable.

分析结果表明，抖纹产生的主要原因是芯棒与钢管之间的非线性干摩擦力导致芯棒产生自激振动；钢管的拉拔速度及钢管表面润滑层的好坏是决定芯棒的静平衡位置是否稳定的关键因素，提高拉拔速度可将干摩擦阻尼转化为粘性阻尼，同时也使拉拔速度远离临界速度，从根本上消除抖

Commonly,office with air-condition lacks of natural airiness,people breathe out CO2,the fog that is coursed by smoking,some office equipment.These things emante maleficence to bulk in the office.There are wet resorting in the air-condition system,this becomes the "dirt-hiding place".Computers,displays,hand-holding telephone and other electric equipments can produce certain amount of ionization radialization.Some building materials also release certain injurant.

带空调的办公室一般缺乏自然通风，人们呼出的二氧化碳、吸烟产生的烟雾、某些办公设备散发的有害气体积聚其中；空调系统里有水分滞留，成为某些细菌、霉菌病毒的&藏污纳垢&之地；电脑、显示器、手持电话及其他电子设备均产生一定剂量的电离辐射；有的建筑材料本身也释放某些有害物质。

Great attention has been paid to the threat of the highly radioactive and the low-level radioactive waste from nuclear industry and the radioactive waste has become a more and more serious problem with the waste from medical industry and research institutions. The uranium from uranium minings has caused the pollution of groundwater around.

核工业生产中产生的高、中、低放废物对环境构成的威胁越来越受到重视，它们与医疗、科研、国防事业的核废物一起成为越来越严重的环境问题，尤其是铀矿冶中产生的U对地下水的污染。

Acid in high-acid foods may react with the iron of the can to release hydrogen and generate a hydrogen swell. Hydrogen sulfide production by Desulfo. tomaculum can cause sulfur stinkers

在高酸的食品中的酸可以和罐头中的铁发生反应生成氢气而产生膨胀，由脱硫肠状菌产生的氢人氢能导致含硫磺的恶臭物质的形成。

In comparison with the current version, in which the signal-to-noise ratio accuracy of the noisy signal produced is heavily influenced by 'clean' signal itself, the proposed approach has removed this unfavorable impact by choosing another factor to rescale the signal.

在目前广泛使用的加噪信号方法中，产生的信噪比精度受无噪信号的影响很大，与之相比，新方法通过选择新的因子对信号进行归一化，剔除了无噪信号对产生的加噪信号的信噪比影响。

Cold water belts between well-mixed and stratified regions are simulated by the model.

模拟结果表明，在层化与混合区之间存在冷水带，它位于潮锋的混合侧，并与表底温度差为1～2℃的等值线位置相吻合，这一冷水带主要是由以下两种机制来维持的：1）锋面产生的截锋面方向上的环流，把位于层化侧下层的低温水卷挟到海表层；2）风和潮共同产生的混合作用。

The power generated by the project will be connected into 35KV bus side of booster substation with 22KV via 35KV box substation, and connected into 220KV bus of Chahar Right Middle Banner Desheng 220KV Substation in west Inner Mongolia via one 220KV trolley line that is set up by power grid company See

这项工程所产生的电能将与带有35KV的强力电网总线相连，此强力电网带有可以将22KV转换为35KV的箱式变压所。同时，产生的电能还将通过一条由电网公司建立的220KV高压电线，与内蒙古西部的察哈尔右翼中旗得胜乡220KV变电站的总线相连。

We summarized the reason and the root on the issue of illegal logging ,with the development of economic globalization, the developed and developing countries in the utilization of forest resources is bound to have a contradiction. The issue of illegal logging of timber is a forest resource in allocation process again.

通过以上的论述总结了非法采伐问题产生的原因与根源，经济全球化的日益发展，有关气缸管的样例，发达国家与发展中国家在森林资源利用问题上的矛盾必然产生，非法采伐问题是一次森林资源利用的再分配过程。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。