smegma

用法例句

The inhibition performance of four sorts of scale inhibitors is tested with static scale inhibition method in saturated brine under the conditions of high temperature,high pH,scale inhibitor PPH-3 then is produced.

通过静态阻垢试验方法,考查了4类阻垢剂在高温、高pH值饱和盐水中对CaCO3的阻垢性能,并在此基础上复配出PPH-3阻垢剂。

scale removers, type JH (JH-211A, JH-213A, JH213B) and WS (WS-1), are developed.

针对油气田普遍存在ＣａＳＯ４垢且难以处理的问题，研制了两类新型ＣａＳＯ４垢除垢剂：ＪＨ类和ＷＳ类。

It is found out that the evaporating heating area producing scale caused by the water quality and flame adhering to the wall are the main causes of cracking,and ways to handle the situation are proposed.

介绍了石门电厂 1 # 炉蒸发受热面水冷壁管环向裂纹失效情况 ,分析了因水质问题引起蒸发受热面结垢与火焰贴墙是产生裂纹的主要原因 ,提出了处理对策 。

Research on Anti-Corrosion and Anti-Encrustation Process for Oil and Water Well Drill Rod;

油水井筒腐蚀结垢及防垢除垢工艺研究

metal cleaning for rust prevention(chemical cleaning of steel products)

防锈用金属除垢方法（铁德化学除垢法）

Evaluation on the Scale Inhibitive Performance of PAA-Static Anti-Scaling Method

聚丙烯酸阻垢性能的评定——静态阻垢法

Dynamic Research of CaSO_4 Scaling and Inhibition in RO Systems;

反渗透系统中CaSO_4结垢和阻垢动态研究

Research on the scaling reasons and prevention of Wangxin 25 well;

王新25井结垢原因分析及防垢研究

Scale Inhibition Performance of HPMA-EDTMPS Compound Scale

HPMA和EDTMPS复合有机阻垢剂的阻垢性能

Synthesis of New Scale Inhibitor ASV and Study of its Scale Inhibition Effect

新型阻垢剂ASV的合成及阻垢性能研究

Prediction Model of Precipitation Fouling Process in the Heat Exchanger

换热器中析晶垢结垢过程的预测模型

Black dirt or soot, especially such dirt clinging to or ingrained in a surface.

污垢，灰垢黑色脏物或煤灰，尤指附着或深嵌在一个表面上的污垢

Comparison of Evaluation on Scale Inhibiting Performance Base on Conductivity Method and Static Method

电导法与静态阻垢法测定阻垢剂阻垢性能的比较研究

His face was covered with grime.

他的脸上满是污垢。

Dirt glitter when the sun happen to shine.

太阳照耀下，污垢也闪光。

grimy hands, windows

沾满污垢的手、 窗户.

Mother was in the garage, brushing the dirt aside

母亲在车库里清扫污垢。

a face covered with grime and sweat

满是污垢和汗水的脸.

soiled with dirt or soot.

被污垢或者煤烟污染。

prevention of scale in boilers

防止锅炉内水垢的产生

Dirt gets rolled up in your navel.

泥垢总是积在肚脐眼里。