大家都搜：
下向力
1、downward dog───下犬式
2、downward mobility───趋下流动趋下流动
3、downward spiral───向下旋转；螺旋式下跌；减记恶性循环；n.恶性循环
4、downward pressure───向下压力；下向压力
5、downward curve───下降曲线
6、downward curves───向下曲线
7、downward sloping───左至右向下延伸，向下倾斜
8、downward───adv.向下；adj.向下的，下降的
9、downward trend───[数]向下趋势，下跌趋势；看跌
1、A member, such as a beam, that projects beyond a fulcrum and is supported by a balancing member or a downward force behind the fulcrum.───悬臂，支架伸在支点之外的一个构件，如一段横梁，由与其持平衡的或向下的在支点后面的一个力支撑
2、The propellor axis was angled down by 7. 5 degrees to make sure there was a downward force on the track.───是的propellor轴角下跌了7.5摄氏度，以确保有一个向下力的轨道上来。
3、Each load sensor provides weight data responsive to a downward force relayed from the platform.───每个载荷传感器提供与从平台传递来的向下的力相对应的重量数据。
4、To sum up, cotton prices downward force more huge, cotton prices down to find the end.───综上所述，促使棉价下行的力量较为庞大，棉价还将向下寻底。
5、Moreover, the effect of real gas for small angle-of-attack case results in small downward force moment, whereas that for large angle-of-attack case results in small upward force moment.───此外，小攻角时真实气体效应产生小低头力矩，而大攻角时产生小抬头力矩。
6、For example, a downward force applied on a vertical steel beam tends to compress the beam, .───在垂直的钢梁上向下着力，这趋向于压缩钢梁；
7、By blowing downward these fans oppose the force of gravity, effectively lightening the vehicle.───通过向下吹风，这些风扇可以抵消引力，有效地减轻探测车的重力。
8、In ordinary stripping operations, the pipe falls into the wellbore under its own weight, and no additional downward force or pushing is required.───在平常的不压井起下钻作业中，管柱下入井眼是依靠其自身重量，不需要附加的向下载荷或者推力。