卸载时摩擦力的作用方向会发生改变，并抑制裂隙面之间滑移变形的恢复，使岩样内部产生残余变形。

In unloading process the direction of friction will convert to prevent restoration of shear deformation between the fissures, which results in the residual deformation in the specimen.

youdao

在何时可以卸载用户代码这一方面，宿主有其自己的规则。

The host has its own rules governing when you can unload user code.

youdao

基于流体质量、动量守恒导出了单管球塞气举和分体式柱塞气举采用“压低液面”卸载的数学模型；

Based on the mass and momentum conservations of fluid, the mathematical model of Two-Piece plunger lift and single-string pig lift which unload by pressing fluid level down is derived.

youdao