活化：使金属表面钝化状态消失的作用。
Activation: the metal surface passivation state disappear role.
水钉的作用，使土钉体外表面与土体界面接触粘结力与摩擦阻力显著降低。
By action of water to nail, Bond between soil and nail a was obviously reduced.
在该表面上没有剪切作用的存在。
目的研究本院研制的利多卡因碱气雾剂的表面麻醉作用。
AIM Study the surface anesthetic effect of Lidocain-base aerosol.
这些气泡聚集在工件表面上阻碍了钝化作用。
These bubbles collect on the surface of the work piece and interfere with passivation.
无机矿物质在金属表面高速滑行时，其刮削作用也不小。
Inorganic minerals in the metal surface high-speed taxi, scraping effect is also not small.
另外，研究了表面涂层对冲击结果的影响，重新认识了其作用。
In addition, we studied the effect of exterior paint, re-cogitating its role.
一是分子的电子结构，二是分子和金属表面的相互作用。
It is the electronic structure of molecule and the interaction between molecule and metal surface.
射频功率的大小对表面损伤起着主要作用。
RF power plays an important role in damage on the sur - face.
探讨了表面活性剂的作用。
在水解作用下可使漆膜表面光滑。
把大量数据放到网上是表面文章，作用不大。
Putting lots of data online may look good but make no real difference.
流体上表面受大气压力作用。
The upper surface of the fluid is under atmospheric pressure.
流体上表面受大气压力作用。
The upper surface of the fluid is under atmospheric pressure.
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