变: become different; change极: I the utmost point; extreme开关: Q-switching单极开关: one-pole switch; single pole switch; single switch; single-pole knife switch; single-pole switch; singlepoleswitch单极开关掣: single-pole switch倒极开关: pole reversing key多电极开关: multiple electrode switch多极开关: multipole switch二极开关: two-pole switch换极开关: polarity reversing switch; pole changer switch; pole changing switch; pole reverser; pole-changing switch两极开关: two-photo pole switch三极开关: three pole switch; three-pole switch; triple pole switch; triple-pole switch双极开关: bipolar switch; double pole switch; double-pole switch; double-poleswitch; two pole switch双极开关掣: double-pole switch双射极开关: dual-emitter switch阴极开关: cathode switch双发射极开关: dual-emitter switch变极点火开关: polarization switch双刀开关 双极开关: double-poleswitch变极: change poles四工通报用电键, 换向开关, 电池换极开关: reverting key极开心: have a barrel of fun变极蒂: pole changing control变极器: inverter积极开展: actively carry out; actively develop
