力  force

力的单位   unit of force

物体       object

相互作用   reciprocity

矢量       vector,  vector quantity

矢量的合成 composition of vectors

矢量加法   vector addition

标量       scalar

示意图     sketch map

大小       dimension, size  

方向       direction, orientation

作用点     point of application

图示       graphic representation

图示法     graphic method

力三角形   triangle of forces

力图       force diagram

动力       momentum

阻力       resistance

重量       weight

重力       gravity

重心       center of gravity

形变       deformation

弹力       elastic force

弹性       elasticity

弹性形变   elastic deformation

弹性限度   elastic limit

弹性材料   elastic material

胡克定律   Hooke’s law

弹簧       spring

弹簧秤     spring balance

伸长       extension,  elongation

拉力       pull

压缩       compression

弯曲       flexion, flexure

弯曲弹性   elasticity of flexure

扭转       torsion

收缩       contraction

推力       thrust

压力       stress

支持力、支承力bearing force, supporting force

支撑物     jack

支撑平面   supporting plane

摩擦力     friction force

动摩擦     kinetic friction, dynamic friction

静摩擦     static friction

静摩擦系数 static friction factor

动摩擦系数 dynamic friction factor

流体       fluid

力的合成   composition of forces

力的分解   resolution of forces

力的平衡   equilibrium of forces

力的平行四边形 parallelogram of forces

平行四边形 parallelogram

平行四边形定则parallelogram rule

对角线     diagonal

力多边形   polygon of forces

合力       resultant of forces

分力       component of force

分量       component

水平分力   horizontal component

竖直       upright,  a. vertical

力矩       moment of force

力矩平衡   momental balance

力线       line of force

力偶       couple

力臂       the arm of force

支点       fulcrum

斜面       bevel

浮力       buoyancy

阿基米德原理Archimedes’principle

机械效率   mechanical efficiency

滑轮       pulley

杠杆       lever