The rock mass boundary can be any excavated and natural free surfaces.
岩体的边界可以是任何自然岩石边坡与人工开挖的任何岩体表面。
In addition we have made special treatments for free surfaces and interfaces.
此外我们对自由面和内界面也作了相应的处理。
Surfaces in contact with the fluid shall be free from scale and annealing colours.
与流体接触的材料表面不得有刻痕和退火变色。
Crack and crevice-free contact surfaces.
无裂缝和缝隙接触面。
All surfaces are free of burrs to prevent the accumulation of dirt.
所有的表面都没有粘附物以防止污垢堆积。
All surfaces are free of burrs to prevent the accumulation of dirt.
所有的表面都没有粘附物以防止污垢堆积。
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