使堵塞

The inclusion of manholes enables the pipe runs to be rodded through in case of blockage and tested in case of suspect ed leakage.

设置人孔；检查井可以使管道在堵塞时便于疏通，在怀疑有裂缝时便于检查。

However, the sea-water system such as condenser and pipings are heavily damaged by blockage in pipes through adhesion and growth of marine organisms and corrosion of copper alloy tubes and tube-sheets in the condensers.

大部分冷却海水管内壁都进行过防腐处理，但是，海水系统中诸如冷却器及连接管总是因海生物的生长而填堵塞，而且海水使铜管及冷却片受到腐蚀。

Estrogen is thought to raise the levels of good cholesterol as well as enabling blood vessel walls to relax more easily, thus lowering the chances of a blockage.

人们认为雌激素提高了有益的胆固醇水平，并且使血管壁更易松驰，从而降低血管堵塞的机率。

Through an analysis on mud-clogging mechanism of suction nozzles on wet type sweeper, a concept is suggested, that water ratio in dust nearing the wall of suction nozzle duct should be decreased so the mud stickiness can be controlled under a critical value and not sticking to the duct wall whereas water ratio in central dust passage of the duct is properly increased to satisfy effective dust absorbing. On the basis of the concept, a water spraying device is designed with improvement for suction nozzles. In the device, the water hole numbers, diameters and distribution along the nozzle circumference as well as initial direction of water spraying are all determined according to concrete suction nozzle structures.

通过对湿扫型道路清扫车的吸嘴易被泥土堵塞的机理分析，提出降低吸嘴流道近壁的尘土的含水率，控制泥块的黏性处于临界黏性以下，使泥块不黏附于流道壁面；而将吸嘴流道中心部位的尘土的含水率适当加大，以满足有效压尘的解决思路，并根据这种思路改进设计了一种吸嘴喷水装置，按不同吸嘴的具体结构确定孔数、孔径、孔沿圆周的分布规律和喷水的初始方向等要素。

Also have a very small number of children is due to the narrow bone or nose deformity caused by lacrimal plug, so we must consider other ways to make the lacrimal duct patency.

也有极少数患儿是由于骨部的狭窄或鼻子的畸形造成泪道堵塞，这样就要考虑用其他方法来使泪道通畅了。

Spoiling a system responsible for air-traffic control at a busy airport , or knocking out the telephones of a major city, is a relatively easy way to spread panic .

堵塞一个繁忙机场的控制航班的计算机系统，或使一个重要城市的电话陷于瘫痪，相对来说是散播骚乱的比较容易的方式。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。