查询词典 ball-pointpen

The paper analysis the ballistic trajectory character of the smoke ball and study the air resistance coefficient of the smoke ball.

文中通过对空抛式发烟弹弹道特点和空气阻力的分析，建立了基于控制空抛式发烟弹引信作用时间的终点控制模型，并运用模型进行了计算分析。

The paper analysis the ballistic trajectory character of the smoke ball and study the air resistance coefficient of the smoke ball. Based on the analyze, the paper establishes the terminal control model and uses the model to calculate and analysis.

文中通过对空抛式发烟弹弹道特点和空气阻力的分析，建立了基于控制空抛式发烟弹引信作用时间的终点控制模型，并运用模型进行了计算分析。

There is also a red rose, which brushes against the steam in the ball so that the bird and I can see outside. The audiences blow the smoke of cigarettes into the ball through a transparent tube. The petals of the rose are rubbed off at last only the bud left.

花一直在磨擦球体内部的水气，使我与鸟能见到外部空间，观众通过一根透明管吹烟进入球体，鲜花的花瓣与气雾及透明壁碰撞，直至只剩下花茎，结束。

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。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。