查询词典 force

The downstroke produces a positive upward force and forward thrust; the upstroke produces a positive upward force and rearward thrust.

该downstroke产生了积极向上的力量和前瞻性的推力； upstroke产生了积极向上的力量和靠后的主旨。

The new technology makes the sucker rod string downwards easily by applying a downward hydraulic force at the bottom of the hollow sucker rod string, which effectively solves the problem of large drag force on the downstroke in the present technology of this kind.

介绍了一种新型空心杆采油工艺技术，这种技术采用了具有液力反馈原理的空心杆抽油泵，该泵的特点是能有效地减小空心杆的下行阻力，并能增加抽油杆的下行动力。

However, the effect of electromagnetic force is stronger than that of the plasma drag force in helium arc.

在氩弧下，影响熔池形貌的另一个重要的驱动力是气体剪切力，而氦弧下则是电磁力。

However, the Drag force has an option that generates a force regardless of its mass.

不过。拖拽力可以简单的就速度做设置，这个设置不用考虑物体的质量。

The drag force model is improved, especially, effect of turbulence diffusion is considered in constituting the drag force model.

根据掺气水流的特点，重点对相间阻力模型进行了改进，特别在构建相间阻力本构关系式时考虑了湍流扩散的影响。

The difference between actual driving force of wheel and driving force of calculation was compared and the range of wheel dimension was recommended.

虽然通过增大车轮滑动率可以产生更大的驱动力，但大的滑动率降低了驱动效率，提高车轮的驱动效率对能源有限的月球车很重要的。

The spring constants of the cantilever were calibrated according to the Cleveland method,and the conversion from the original data to the force-distance or force/radius-distance curves was obtained with satisfactory results referring to the Ducker\'s classical paper.

采用Cleveland方法对悬臂的弹性常数进行了标(来源：Aecb4BCb4论文网www.abclunwen.com)定，将原始的力-位移曲线数据转化为力-距离曲线或力/半径-距离曲线，并将实验结果与Ducker经典论文进行了对照。

The expression of the earth tide force was derived. The tidal force causes tide, and the period of the tide is 12h.

在理论推理和数理分析的基础上，获得了地球产生周期性涨落变形的潮汐力表达式。

As you know, only universal gravitation and electromagnetic force are long-distance force in the universe.

我们知道，宇宙中只有万有引力和电磁力这两种长程力。

In nuclei nuclear force is 137 times higher than the electromagnetic force.

在原子核中，核力要比电磁力大 137 倍。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切