查询词典 ball-shaped

Variety including gulley ball bearing, cylindrical roller bearing, spherical surface roller bearings, circular cone roller bearings, angle contact ball bearing, needle bearing and other many kinds of types.

品种包括深沟球轴承、圆柱滚子轴承、球面滚子轴承、圆锥滚子轴承、角接触球轴承、滚针轴承及其它多种类型。

They were among Wang pull a rope, a sewing cloth, hair inside Cypriots to the ball, rope separated the two sides is satisfied with care over the past, and this is the first tennis. In 1873, Britain Schumacher temperature Fuerth the squires, this ancient game moved outdoors. The mid-19th century, Europeans mastered the rubber, which can only make the bouncing ball.

他们在二人之间横拉一条绳子，一个用布缝制的、里面塞以毛发的球，双方隔绳用手托过来托过去，这就是最初的网球。1873年，英国有个叫温菲尔特的乡绅，把这古老的游戏搬到室外。19世纪中叶，欧洲人掌握了橡胶技术之后，才做出了能弹跳的球。

In Porto, one interception he did in the centre of the box, he was holding the ball in his feet on the half-turn where a central defender puts the ball in the stands and gives the team time to organise.

在对PORTO的那场比赛中，有一次他在禁区中圈截下球后，半转身护球，一个真正的中卫的动作应该是踩住球来准备由守转攻的组织。

The first time of my ever seeing him in Hertfordshire, you must know, was at a ball -- and at this ball, what do you think he did?

你得知道，我在哈福德郡第一次见到他，是在一次舞会上——你知道他在这个舞会上干什么了吗？

If frivolous at ordinary times, need not heart, do not drill not only the skill in playing a ball game that has given, instead nurturance a lot of undesirable habits, encounter regular game hurry-scurry, flaw 100, he Lai is masterly skill in playing a ball game!

假如平时随随便便，不专心，不仅练不出好的球艺，反而养成了许多不良习惯，碰到正规比赛手忙脚乱，漏洞百出，何来精湛球艺！

By so doing he is able to identify the ball as his ball.

这样做他就能辨认是否是他的球了。

The optimal ball diameter and the mass ratio of ball /ilmenite were 20 mm and 70∶1, respectively.

结果表明，采用滚筒球磨活化时，适宜的磨球直径为 2 0mm左右，球料比为 70∶1左右。

The extended, race-to-13 final match began inauspiciously when, in the first rack, Bustamante scratched off the 6 ball into the side pocket, Drago rattled the 7 ball, and both players took a couple of turns at the 8 before Bustamante finally scratched and Drago won the game.

延长，种族-- 13最后一场比赛开始inauspiciously时，在第一机架，布斯塔曼特抓伤过6球，侧口袋，德拉戈困扰7球，双方球员发生一对夫妇的轮流在8月之前，布斯塔曼特最后抓伤和德拉戈赢得了比赛。

Because the workpiece is in dynamic balance, the resultant moment acting on it should be zero. Introducing the moment from lapping tool and press head a moving differential equation is built. In this equation only workpiece rotating speed is unknown. It means that workpiece rotating speed can be got by this equation. Since there is a transcendental function in integral function of the equation an analytic result can not be got, only digital result can be got by a computer. Thus a change rule of workpiece rotating speed with lapping parameters is known, e.g. the radius of press disc ball socket, radius of press head ball, the distance between the workpiece rotating axis and lapping tool rotating axis, workpiece radius, modulus of elasticity of the press head and press disc, friction coefficients between the lapping tool and workpiece, and between the head and disc, pressure between the lapping tool and workpiece and pressure between the press head and press disc.

因工件处于动态平衡状态，其上所受到的来自于磨具和压头的力矩应相等，将二力矩表达式联立，建立工件运动微分方程，该方程中只有工件的旋转角速度是未知量，因此可以求出工件旋转角速度，但该方程积分式中含有超越函数，得不出解析解，只能通过计算机求出数值解，得出工件旋转角速度随各研磨参数的变化规律，如压盖球座半径、压头的球头半径、工件回转中心相对磨具回转中心的偏心距、工件半径、压头和压盖材料的弹性模量、磨具与工件间的摩擦系数、压头压盖间的摩擦系数、磨具与工件间的压强、压头压盖间的压力等。

Jump over one ball or a row of balls of the same color with a ball of different color.

跳了一球的颜色相同或不同的颜色与一球一球的行中。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。