碰

"Please, sir" he said, touching his sun hat, which was stuck on the back of his head in a somewhat ludicrous fashion.

"请，先生，"他举手碰了碰遮阳帽沿，那帽子怪模怪样地扣在他后脑勺上。

In this dissertation, periodic impact motions in vibro-impact systems are studied, and the existence and stability of superharmonic periodic impact motions are obtained. The critical bifurcation parameter intervals of superharmonic periodic impact motions are deduced, and numerical simulations are used to verify the results.

中文题名碰振或约束系统的全局分析及稳定性研究副题名外文题名 Studies on global analysis and stability in vibro-impact or constraint systems 论文作者张彦梅导师陆启韶教授学科专业一般力学与力学基础研究领域\研究方向学位级别博士学位授予单位北京航空航天大学学位授予日期2002 论文页码总数95页关键词碰振系统转子系统多体系统碰撞振动馆藏号BSLW /2003 /O322 /1 本论文讨论了碰撞振动系统的周期碰撞运动，得到了超谐周期碰撞运动的存在性和稳定性，推导出亚谐周期运动的临界分岔参数区间，并利用数值模拟进行验证。

The influences of the nonlinear clearance-excitation fluid force of turborotor on the dynamic behaviors of rotor's axial rub-impact are insignificant. The only effect is the appearances, in the axial response, of the higher order superharmonic components of even-time working frequency at low rotating speeds.

分析表明，非线性涡轮叶尖间隙流体激励力对转子轴向碰摩的非线性特性影响不很明显，只是在低转速时轴向振动碰摩响应中会出现更高阶的偶数倍频的超谐波成分。

If the equipment moves right and touching EAST switch couldn't stop the equipment, while touching WEST switch could, immediately stop operating the equipment and exchange the two stroke switch plug and resume the test

如果向 EAST 时，碰 EAST 的不停，而碰 EAST 的停止，立即停止运行设备，将配电箱上两个行程开关的插头调换，重新试验。

She raised her small gloved fist, yawned ever so gently, tiptapping her small gloved fist on her opening mouth and smiled tinily, sweetly.

她举起戴着手套的小拳头，十分文雅地打了个哈欠，用戴了手套的小拳头轻轻碰了碰启开的嘴，甜甜地泛出一丝微笑。

I would not touch him with a pair if tongs.

我碰也不想碰他；他实在是个钳子。

A comparison is conducted to evaluate the performance of the optical mouse, the touch pad and the track point.

结果显示虚拟追踪球手套滑鼠的移动效能虽然不及一般桌上型的光学滑鼠，但在与同为行动装置的触碰板以及轨迹杆比较，虚拟追踪球手套滑鼠却以将近高出一倍的移动效率远远超过触碰板以及轨迹杆。

Then, touching the shoulder of a townsman who stood next to him, he addressed him, in a formal and courteous manner.

随后，他碰了碰旁边站着的一个本镇居民的肩膀，礼数周到地开了腔。

Then touching the shoulder of a townsman who stood near to him, he addressed him in a formal and courteous manner

随后，他碰了碰旁边站着的一个本镇居民的肩膀，礼数周到地开了腔。

Then, touching the shoulder of a townsman who stood next to him, he addressed him, in a formal courteous manner.

随后，他碰了碰旁边站着的一个本镇居民的肩膀，礼数周到地开了腔。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。