在胶体中加入一些能够吸附在它上面的带相反电荷的分子，有时可以中和其电荷。
The charge on a colloid can sometimes be neutralized by addition of molecules of opposite charge which have the ability to absorb onto the colloid.
脚手架搭设过程中和在管架上行走必须将安全带扣在设置好的横杆或生命线上。
During the scaffold erection and when walking on the pipe rack, safety harness must be secured to the life line on the Pope rack.
研究结果表明 ，采用高压高速射流技术 ，可以切割破岩、减轻近井地带应力集中和穿透近井污染带 ，其结果可以使油井获得增产增注。
The stimulation mechanisms of oil well oriented from the deep-penetrating perforation with high-pressure water jet were comprehensively investigated. Three main aspects of this technique be…
研究结果表明 ，采用高压高速射流技术 ，可以切割破岩、减轻近井地带应力集中和穿透近井污染带 ，其结果可以使油井获得增产增注。
The stimulation mechanisms of oil well oriented from the deep-penetrating perforation with high-pressure water jet were comprehensively investigated. Three main aspects of this technique be…
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