压下的

The re- quired property of sealing material used in mechanical seals is discussed in this paper.

机械密封是一种依靠弹性元件对密封副预紧，在介质与弹性元件压力共同作用下使密封副压紧而达到密封的轴向端面密封装置，其结构见图1。

I plant's main products are machine-139 F, 142F, 152F, 154F, 168F, 173F, 182F, 188F, E40, E43, C62, C63, C64, C65, 1P60, 1P61, 1P64, 1P65, 1P68, 1P70, 2V77, 2V90, T02-aircraft piston pin, valve spring, with valve tappet, throttle governor stalk, the throttle lever, the exhaust valve adjustment cap, the combination valve putt; And motorcycle engine camshaft CG125-core, under the rocker shaft, the pressure of sales, output shaft, the putt.

我厂的主要产品有通机139F、142F、152F、154F、168F、173F、182F、188F、E40、E43、C62、C63、C64、C65、1P60、1P61、1P64、1P65、1P68、1P70、2V77、2V90、T02通机活塞销、气门弹簧座、气门挺柱、油门调速柄、油门操纵杆、排气门调节帽、气门推杆组合；及摩托车发动机CG125型凸轮轴芯、下摇臂轴、压销体、输出轴、推杆。

When the system lost pressure, it drives the pitch safety cylinder action, to bring the blade back to downwind position.

每个桨叶配备各自独立的蓄能器组件，35L蓄能器，在系统失压情况下，驱动安全油缸动作，使桨叶回到顺桨位置

This paper presents a method used for calculating the natural frequency of gases subjected by small pressure pulsations in pipe systems.

本文介绍一种用以计算微压扰动下管道中气柱自振频率的方法。

We can get different filtering and rubber-covrering of press plate of semi-product for constant outline,so the machine has many uses.

本机属热喂料方式单螺杆挤出，能转速调节，并在调换机头的情况下能获得多种挤出半制品定型用压片过滤包胶，故其使用范围较大。

The platens pressing pressure can be regulated infinitely from zero to its maximum rated pressure.

下面板上的压力控制旋钮带有压力表可以帕斯卡显示压强，压台压力从零到最大值之间无级可调。

The platens pressing pressure can be regulated infinitely from zero to its maximum rated pressure.

下面板上的压力控制旋钮带有压力表可以公吨显示压力，压台压力从零到最大值之间无级可调。

Through the above three categories of applications in the market, we focused on a number of objects and materials designed for temperature and pressure, and ask viscous fan anti-related.

通过以上三大类在市场的应用下，我们针对一些物体物料又设计了耐温耐压式，以及抚粘性防堵关风机。

Hurtle to press to belong to to material of cold process, the original material that use is all the plank material that has the good ductility generally, usually under the normal temperature, the material places among the molding tool, passing the output pressure function of punching machine or press machines under, make material press the shape occurrence su of the molding tool decision transform, get need of zero, parts, sometimes transform once and can't attain the request because of the material, also have the cent to hurtle to press for many times and transform gradually on the molding tool of dissimilarity, end attain to design the size request.

机械类的帮我翻译一下吧~谢谢了！冲压属对材料的冷加工，使用的原材料一般都是有良好的延展性的板材，通常在常温下，材料放置于模具间，通过冲床或压床产生的压力作用下，使材料按模具决定的形状发生塑性变形，得到所需的零、部件，有时因材料一次变形不能达到要求，也有分在不同的模具上多次冲压、逐步变形，最终达到设计尺寸要求。

The receipt is under the book on the table.

发票压在桌子上的书下。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。