恒压面

Instant electric field-induced domain switching, crack initiation and propagation in a poled BaTiO3 single crystal, as well as sustained field -induced indentation crack propagation and 90°domain switching in an unpoled BaTiO3 single crystal have been investigated in situ using optical microscopy.

金相显微镜原位观察了面内极化的BaTiO3单晶在瞬时电场作用下的畴变和裂纹形核、扩展的关系以及未极化BaTiO3单晶在恒电场下Vickers压痕裂纹扩展和电致畴变的关系。

Combined with the practical work of fire extinguishing system of north freight yard in Yuci the constant pressure firefighting water supply system is introduced from electric control, converter, PID governor, pressure sensor and other aspects.

结合榆次北货场消防系统的修建安装，介绍了由电气控制柜、变频器、PID调节器、压力传感器及水泵电机等组成的恒压消防供水系统，指出该系统对火情具有反应速度快、适应性强、保护面广等优点。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。