wall impurities 壁上污染
Impurities gathered in the duct wall affected the cooling effect of coal gas primary cooler.
我厂的煤气初冷器因管壁上结积杂质而影响其冷却作用。
The diffusion of the impurities in the light doped region can be reduced in the process of forming the side wall.
可减少轻掺杂区中的杂质在形成侧墙的过程中发生扩散。
This paper describes the experiment results on removing impurities from vacuum wall by means of pulse discharge cleaning in the HT-6B Tokamak device.
本文叙述了在HT - 6b托卡马克装置上，采用脉冲放电清洗去除真空室壁表面杂质的初步实验结果。
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