没有长远的有意义的角色，因为任何结果都是可反转的。
There is no long-term significance to the characters, because any consequences are reversible.
延长极性反转时间可降低极性反转时的场强。
Elongating the time of polarity reversal can reduce the field strength under polarity reversal.
一直以来，溜溜球的绳子都是拴在轴上，让球盘旋转到底时可立即反转向上爬。
All along, the string was tied to the axle, causing the spinning disks to return up the cord immediately after they hit bottom.
TR400反转探测器是一款逻辑控制的过程速率计，可现实任何产品在加工过程中的速率或时间，方便，精确。
The TR400 is a Full Logic Control Process Ratemeter that can display any production rate or time in process easily and accurately.
通过可自由选择的AM/FM调谐器可以收听广播，自动反转机构对录音和播放均有效。
The optional AM/FM tuner pack allows one to listing to radio broadcasts . The reverse function offers utility for both recording and playback.
铁电材料的疲劳特性是影响依赖可反转极化工作的电子器件性能的关键，例如非易失性铁电存储器。
Ferroelectric fatigue is much fatal for the electric apparatus based on the switchable polarization, such as non-volatile random access memories (NVFRAM).
结果表明：在不考虑激光线宽及消相碰撞时，探测场的吸收随时间在零吸收附近作类似于阻尼减幅振荡，系统可实现无反转放大；
It is shown that the time-dependent probe absorption is oscillatorily damped to its steady state and transient amplification without inversion can be realized;
第一壳体和第二壳体通过在第一壳体的一端的铰链装置连接，并且所述 壳体可旋转使得前面和后面反转。
The first and second housings are connected by a hinge device at one end of the first housing, and they rotate so that the front and back faces may be reversed.
高度，极性可反转积变换。适用于信号耦合等极性需反转变换的电路。
Be 7mm in height, the polarity can be reversed. Used in circuits what polarity is reversed, such as signal coupling, etc.
所述的通风窗口上安装有并排的二只轴流风机构成的、可正反转的电风扇；
The electric fan on the ventilation window consists of two axial flow blowers which can rotate forwards and backwards.
所述的通风窗口上安装有并排的二只轴流风机构成的、可正反转的电风扇；
The electric fan on the ventilation window consists of two axial flow blowers which can rotate forwards and backwards.
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