1) Dual power
双动力
2) hybrid system
双动力源
3) Double-dynamical Take-off
“双动力”起跳
4) double power structure
双动力系统
5) dual powerplant
双动力装置
6) double driving head drilling machine
双动力头钻机
1.
In Huanghe Xiaolangdi water conservancy engineering,pneumatic downhole hammer and double driving head drilling machine were used to solve the problems coming up against with common pneumatic downhole hammer and conventional drilling technology while drilling in slag layer of 50m thickness.
在黄河小浪底水利枢纽观测孔工程中,采用气动潜孔锤跟管钻进结合双动力头钻机成功地解决了普通气动潜孔锤及常规钻进工艺在厚度达50 m渣石层成孔难的问题。
参考词条
补充资料：双动力大客车
一种双能源的无轨电车。在无轨电车上装有柴油机或蓄电池组，当通过十字路口或不容许架设架空触线的路段时，由驾驶员操作使集电杆脱离架空触线，改用内燃机或蓄电池组驱动行驶。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。