There is some trouble in the borehole. Don't leave the rig floor.井下出现复杂情况, 不要离开钻台.Borehole hydromining is a kind of safe and efficient new mining method.钻孔水力采煤是一种既安全、又能极大地提高资源利用率的新的采矿方法.But the research on borehole ...
The only plants to be found in Antarctica are algae, mosses, and lichens.在南极洲所发现的植物只有藻类 、 苔藓和地衣.Litmus: Mixture of coloured organic compounds obtained from several species of lichens.石蕊: 从几种地衣类植物中获取的带色有机化合物的混合物.Lichens, ...
This afternoon the Palestinians held an impromptu press conference.今天下午巴勒斯坦方面临时召开了记者招待会。They demand self - autonomy for the Palestinians.巴勒斯坦人民要求 自治.Shelling a short time later killed two more Palestinians.不久之后,又有炮火击毙了两名...