portable drill

development of comprehensive protector for portable drill with all digital

轻便钻机全数字综合保护装置的研制

This portable rig can only drill 15m deep holes.

这台人抬钻机只能打15米深的井。

before you buy a portable drill, check the manufacturer warranty as well as the availability of parts.

在购买便携式钻子之前，核对下生产厂商的担保书以及可以使用的部件。

a portable drill or an electric chainsaw could save labour, and make light of roughing out big boards.

移动式钻床或电锯都能节省劳动力，切大块板子就变得轻松多了。

This portable rig can only drill 15 m deep holes.

这台人抬钻机只能打15米深的井.

After reformation of drill pump, rotary table and drilling rod, the triple-men portable rig has achieved good results when drilling is in breed zone by netting box and other land areas.

对三人钻机的压水泵、转盘、钻杆部件进行改进后，三人钻机在围网养殖区以及其它陆上钻井时，都取得了良好的效果。