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1. 单极：single pole three throw switch 单刀三投开关 | single pole 单极 | single pull hatch cover 单拉开式舱盖
2. 单柱：single point grounding 单点接地 | single pole 单柱 | single pole cut out 单极熔断器
3. 单极型：发展极:development pole | 单极型:single-pole | 陷落柱:collapsed pole
4. 单极的：single-polaritypulse-amplitudemodulation 单向脉幅调制 | single-pole 单极的 | single-pole-piecemagnetichead 单极磁头
1. 911chaxun查询·英语单词大全
1. It is possible to balance on a single bamboo pole and race across a lake, but not if you're me.
2. As they had to bore through a thick layer of permafrost, it took them at least three hours to install a single iron pole.