伸缩

The prestressed reinforced concrete continuous rigid frame bridge is a kind of bridge which is nice wholeness , bearing property and has bright and pithiness bridge style .

预应力混凝土连续刚构桥是一种结构整体性好，受力合理，造型简洁明快的混凝土桥型，既保持了连续梁无伸缩缝，行车平顺的特点，又有T型刚构桥不设支座，施工方便的特点。

This kind of structure is fit for the comfortable steer with no other expansion joints except for those at the two ends. It characterized the wholeness of structure , good astigmatic ability and load-bearing ability , construction rapidness, bright and pithiness bridge style, so rigid frame bridge have taken an increasingly great proportion in bridges constructed and those under construction at city and county.

连续刚构桥能满足特大跨径桥梁的受力要求，除梁端以外无其他伸缩缝，有利于行车平顺舒适，具有结构整体性能好、抗震能力强、承载能力强，施工快捷等结构特点，因此在城乡已建和在建的桥梁中占据了越来越大的比重。

The PZT plates were polarized in thickness direction. By using the deformation in the plane perpendicular to the direction of polarization, the rotation around Z axis was generated when the torsional vibration around Z axis mode was excited. And the rotation around X axis or Y axis was generated by combining the longitudinal vibration mode and the bending vibtration mode.

利用压电陶瓷在垂直极化方向平面内的变形，激励定子绕Z轴的扭转振动模态，实现转子绕Z轴的转动；激励在定子中固有频率接近、振动方向相垂直的伸缩振动模态和弯曲振动模态，并通过振动的叠加使定子末端质点产生绕X轴或者Y轴的椭圆运动，实现转子绕水平轴的转动。

If there is an input rotation rate on the vibrator,an induced voltage proportional to the angular rate will be produced in the direction perpendicular to the plane composed by the polarization axis and the input angular rate axis according to the Coriolis effect.

由PZT薄膜材料做成的平板沿厚度方向极化并受电激励产生厚度伸缩振动，当一输入角速度作用于振子，根据哥氏效应，则在极化轴和输入角速度轴组成的平面垂直方向上产生一正比于输入角速度大小的感应电压。

The red panda has pointed ears, stout limbs, and plantigrade feet (heel and toe touching the ground) with partly retractile claws and woolly soles.

小熊猫具有敏锐的耳朵，结实的四肢和有着部分伸缩自如的脚爪与覆满毛的脚底的跎行足。

Adopting the method of discontinuity bypass mapping,the Poincare mapping of Jeffcott model near a grazing orbit was estimated as a four-dimensional mapping with square-root compressing or stretching at one direction,from which many chaos motions were found by researching the mapping.

采用不连续穿越映射技术，Jeffcott碰摩转子系统的映射在擦边碰撞附近可以近似为在一个方向上有平方根伸缩的四维映射，本文对此映射的动力学行为进行了研究，而且发现了有大量的混沌现象存在。

Using the quasihomogeneous properties of these vector fields and their induced metric, we get some results on A-B-P type estimate analogous to that of polarizable Carnot groups.

首先利用该向量场及其诱导的拟度量关于伸缩变换的拟齐性质，证明了与可极化Carnot群上非散度型方程相应的结果。

The porterage machine hand of this text research has 5 freedoms degree, can carry out the bedrock to revolve, the rise and fall and stretch and shrinks of the arm, the wrist revolves to clip with the hand claw tightly.

本文研究的搬运机械手具有5个自由度，可实现底盘的旋转，手臂的升降及伸缩，手腕的旋转和手爪的夹紧。

Based on the linear elastic theory, the piezoelectric theory and magnetostrictive theory, using the power series expansion series method, a three-dimensional resolution of the natural frequencies of a simply supported rectangular laminate is investigated.

基于线弹性理论、压电理论和磁致伸缩理论，使用幂级数和傅立叶级数解法，得到了四边可移简支、磁电复合材料层合板的固有频率的三维精确解。

Due to exposure to atomic radiation, Doctor Octopus has the ability to control his four artificial tentacle arms (even when they are not connected to him, he can also control them over vast distances), electrically powered, telescoping prehensile titanium-steel tentacle appendages are attached to a stainless-steel harness encompassing his lower torso.

因暴露于原子辐射，医生八达有能力控制自己的四个人工触手武器（即使他们是没有连接到他时，他还可以控制他们广大的距离），电动，伸缩抓握钛钢的触手附加物附加到不锈钢他利用包括降低躯干。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！