A body at rest remains at rest unless acted upon by an external force .
除非受外力作用，静止物体将保持静止。
When several external forces act on a body, we may wish to consider the works of the separate forces.
当几个外力作用于一个物体时，我们可能希望考查各个力所作的功。
the gradual departure from an intended course due to external influences (as a ship or plane).
由于外力作用沿预定路线逐步移动的过程。
The second law says that when an outside force acts on an object,
第二定律指出，当一个外力作用于一个物体时，
The passengers are deluded into believing themselves to be in an inertial frame with no forces acting.
乘客误以为自己处于惯性系中，且不受外力作用。
at the same speed unless they are acted on by force.
如果无外力的作用的话。
Working Group on the Use of Nuclear Power Sources in Outer Space
外层空间使用核动力源问题工作组
China Strives to Create a New Situation in Foreign Capital Utilization
中国努力开创利用外资工作新局面
Multi-context and its usage in listening comprehension;
多元化语境在外语听力理解中的作用
On the Functions of Multi-Intelligence Theory to Training Foreign Language Competence;
多种智力理论对培养外语素质的作用
On the role of thinking in foreign language and language sense in developing language abilities;
论外语思维及语感在培养外语能力中的作用
Enterpriser satisfaction is an internal motive and customer satisfaction is an external force.
ES是内在动力源泉 ,而CS是外部作用力量。
On the Role of the Teaching Method of “Cooperative Learning” in Improving Students′ Communicative Ability in English;
试论“合作学习”对学生外语交际能力提高的作用
Research on the Effect of Human Capital on the use of FDI in China
人力资本在我国利用外资中的作用研究
The stress status of asphalt-mixed-stuff under load is analyzed.
分析外载荷作用下沥青混合料的应力状态。
A body at rest will not move till a force is exerted on it.
若无外力的作用，静止的物体则不会移动。
the next is the effect of exogenic process under marginal glacial environment during Quaternary Glacier Epoch;
第二是第四纪冰期时冰缘环境下的外营力作用;
The exudation of water from leaves as a result of root pressure.
吐水作用由于根部压力使叶片向外渗水的现象