例句與造句

1. Automatic extension drill
   手搖骨鉆
2. The extension drill rod which can be used for higher capacity drill , the drill hole can be extended to sezeral meetrs , when drilling the straight hole , the core lifter can help coring
   選用加長(zhǎng)鉆桿于較大能力的鉆機(jī)，可將鉆孔延深至數(shù)米，鉆垂直孔時(shí)，可采用取芯器配合取芯。
3. It's difficult to find extension drilling in a sentence. 用extension drilling造句挺難的