查询词典 downstroke

By making model flappers, for example, I discovered quite early on that there is no need to power the upstroke - lifting forces are quite capable of bringing the wings back up ready for the next downstroke.

由决策模型flappers ，举例来说，我发现不少早期就是有没有必要的权力upstroke -解除势力是有相当的能力，使两翼回到了准备，为下一步

Sporting a powerful but eccentric downstroke, Guldahl won three major championships in as many years.

动作古怪地挥出了有力一杆后，Guldahl赢取了三大重要赛事，而且好几年都赢得了大满贯。

By means of the K-ε turbulence model and finite element method, the flow of the fluid in the valve and the piston during a cycle of pumping is simulated and calculated. The motion law of the crude oil in the valve passage and concentric annulus in the upstroke and downstroke is analyzed.

针对杆式泵泵简内的流体流动问题，采用湍流模型的K-ε两方程模型和有限元方法，对在一个抽油循环中阀与活塞在几个特定的位置的流体流动进行了建模与计算，具体分析了处于阀道内和同心环状空间中的原油在上下冲程的运动规律。

On the principle of both work and energy equalization during the upstroke and downstroke, the writer analyses an approximate calculating method of rotary balance acquired by this type of the beam pumping unit.

本文根据抽油机上下冲程功能相等的原则，分析了前置式抽油机取得旋转平衡的近似计算方法。

"In a two-stroke cycle, the compression and power strokes of the four-stroke cycle are carried out without the inlet and exhaust strokes, in one upstroke and one downstroke of the piston and one revolution of the crankshaft."

在二冲程循环中，只有四冲程循环的压缩和动力冲程，而没有进气和排气冲程，在活塞的一个上升冲程、一个下降冲程，同时曲轴旋转一周后完成。

A second important point is that the wing on the downstroke must either rotate bodily into a more leading-edge-down position (ie: negative angle of attack), or the wing membrane itself must be flexible enough to twist into this new position.

第二个重要的一点是，机翼就必须要么downstroke旋转身体成为一个更领先式的立场，或翼膜本身必须具有足够的灵活性以扭到这个新职位。

Then place your heels on the pedals and adjust the saddle height so that your legs are fully extended on the downstroke, yet your hips don't rock as you pedal.

然后，你用你的脚后跟踩在脚踏上面，调整座垫高度，使你的腿能在用脚后跟登踏到最低点是完全伸直，注意，此时，你的屁股不能在座垫上左右摩擦。

During the powered downstroke, the torsional effect of having the centre of effort of the wing behind the pivot axis causes the wing to tilt into a nose down position until the upstroke begins.

在动力downstroke ，扭的影响后，该中心的努力，永安背后的枢轴轴的原因机翼倾斜成为一个鼻子下跌的立场，直到upstroke开始。

Partial flexion of the wing during the upstroke reduces the magnitude of the rearward thrust to less than that of the forward thrust produced during the downstroke, providing net positive thrust per wingbeat From Hedrick et al.

局部屈曲的机翼在upstroke减少的幅度靠后的推力，以低于该前进推力过程中产生downstroke ，提供积极的净推力每wingbeat

Elasticity plunger resume original dimension, the gap between plunger and pump barrel was increased downstroke.Leakage of sucker pump with automatic compensate gap was decreased and pump efficiency was increased upstroke, friction between plunger and pump barrel was reduced downstroke.

下冲程，弹性元件恢复原尺寸，柱塞与泵筒之间的间隙增大，从而实现上冲程减小泵漏失量，提高泵效，下冲程降低了柱塞与泵筒之间的摩阻。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。