Sandstones are, as a rule , interbedded with shales.砂岩通常都与页岩互层.This paper presents the PDC bits with the satisfactory testing result in the multi - interbedded formation.介绍了一种复合式PDC钻头,该钻头在多夹层地层钻井施工中取得了较好的试验效果.A shale for...
撒切尔女男爵的主张在很多人看来是可信的。Baroness Thatcher's claims seem credible to many.你是温尔顿男爵的朋友 吗 ?Are you a friend of Baron Wendleton's?遇到的客人和见到的气派,都不合乎男爵的口味.The company and the splendour which he met there were not to the Ba...
Instead of snacking on crisps and chocolate, nibble on celery or carrot...不要把薯片和巧克力当零食来吃，要吃些芹菜和胡萝卜。He started to nibble his biscuit...他开始啃饼干了。Instead of snacking on crisps and chocolate, nibble on celery or carrot.不要把薯片和...
他今天穿的是工作裤.He is in overalls today.他穿着蓝色的工作裤.He was wearing a pair of blue overalls.一加仑汽油和尼龙工作裤落进了山谷.A gallon of gasoline and the nylon overalls fall into the valley....