查询词典 have a ball

The toy was composed of four parts, a soft spring, an iron ball, a bowl, and a tube. The spring was fixed inside the tube. On the other end of the spring, there was a line through the bottom of the bowl, then connected with an iron ball.

在爱因斯坦的最后一个生日（ 1955 年 3 月 14 日）他的邻居 Eric Rogers 送给他一个玩具，该玩具以一个弹簧固定在窗帘用的铜棒内，弹簧很软，一条绳子系著弹簧一端，另一端穿过固定在铜棒端的金属碗中央的小孔，使重球倒挂在碗外；玩法是：运动铜棒，要让重球落入金属碗内。

Several other types of ammunition were developed for this weapon, including tracer, subsonic ball and soft-core training ball.

其他几个弹药类型开发了这种武器，其中包括示踪剂，亚音速球和软核心训练用球。

The new ball, manufactured by Spalding, features a new design and a new material that together offer better grip, feel, and consistency than the current leather ball.

由斯伯汀制造的新球用上了崭新的设计和材料，比旧球拥有更好的控制，手感，和连贯性。

Sales of its products include: LM series of precision rails, precision Ball Spline, precision ball screw and associated support components, precision cross-roller working platform, rail actuators, Zhixian Qiu Waterloo Block, guided packages, and various derivative - Spherical and even the axis of linear motion products such as grease.

其销售产品包括： LM系列精密导轨、精密滚珠花键、精密滚珠丝杆及配套支撑部件、精密交叉滚子工作平台、导轨引动器、直线球滑座、导套、导柱及各种球面连轴节和直线运动产品润滑脂等。

The ball 's redness and sphericity are ways it – that ball, and nothing else – is.

这个球的红色性和球形性是它所是的方式。

By this model, the formation of a spindle-shaped tip at the early stage of the ball forming process and the liquid metal wrapping around the solid copper wire tip can be explained, and thus the basis for controlling ball quality is established.

利用这一模型可以很好地解释铜丝在形球时产生纺棰形"尖刺"以及液态金属沿固态金属丝上衰的原因，从而为控制形球质量奠定了基础。

A strip block is used instead of the ball to eliminate the measurement error caused by the trajectory deviation of the ball when passing the photo gate.And a spring clip is used to replace the electromagnet to eliminate the effect of remanence.

在单摆法中，要求忽视细线的质量且线长及小球尺度相比很大，把小球看成质点，并且小球的摆幅不能超过5°[1~3]；在自由落体法中，一般是用小球作为自由落体，但小球通过光电门时，往往不是小球的质心遮光计时，另外，钢球是用电磁铁通电后吸住的，由于断电的瞬间，电磁铁有剩磁，钢球不立即下落，并且钢球应吸在电磁铁的中心处，这些因素都会影响重力加速度的测量。

Different straight-ness measurement methods are described (straightedge, taut wire, laser interferometer, local squareness measurement, ball plate and ball beams) and their suitability for machine tool measurements of movements over 2 000 mm length discussed.

描述了不同的直线度测量方法(直尺法、钢丝绳法、激光干涉仪法、局部垂直度测量及球板和球杆法等)，并讨论了这些方法对测量移动长度超过2 000 mm的机床的适用性。

After reading "suet ball," the first impression that the call for suet ball injustice.

读完《羊脂球》的第一感觉，就是为羊脂球叫不平。

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

In other research, chondroitin is being investigated for use in several other conditions.

在其它研究，软骨素被调查用於几个其它情况。

They would make fun of him for having to work.

他们拿他的工作来开玩笑。