external agent meaning in English
外营力
Examples
- In forced convection the movement of the fluid or gas is caused by an external agent which gives rise to pressure differences .
在强制对流中，液体或气体的运动是产生压力差的某种外营力造成的。 - A structure or substance not normally present but produced by an external agent or action , such as a structure seen in a microscopic specimen after fixation that is not present in the living tissue
矫作物非正常出现而是由外界因素或作用所产生的一种结构或物质，如经固定后，在显微镜下才能看到的标本中的一种活生命组织中不会出现的结构 - Planation is a combination of external agents . erosion is the primary significance in that it cuts all the strata formed previously and in the combination with transportation and accumulation , directly affects the formation of planation surface
夷平作用是以侵蚀为先导，辅以搬运、堆积、伴随有地形的蚀低蚀退，以接近侵蚀基准面为目标的一种外力组合。