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- black blasting powder 黑色火药
- The importance of it in safety production of coal mine was discussed through accident case, according to theory of blasting powder and function of stemming. 本文根据炸药的作功原理和炮眼封泥的作用,通过事故案例,论述炮眼封泥质量在煤矿安全生产中的重要性。
- In the process, the holes were drilled by drifter with booms, the emulsified blasting powder wasfirst used for rock plug burst and a new method for calculating blast found application. 在方案实施中，采用多臂凿岩台车造孔及首次应用岩石乳化炸药作为岩塞爆破用药，并提出了装药量计算的新观点。
- usually made of metal, for gunpowder of blasting powder. 用金属制成的用来放火药的筒。
- blasting powder = black powder 黑色矿山爆药
- He was in black from crew to earing. 他全身上下都穿着黑衣服。
- He whipped up a pistol and shot at the black bear. 他急忙抓起手枪，向那头黑熊射击。
- Many people were taken off by the Black Plague. 许多人被黑死病夺去了生命。
- The man is carrying a small black plastic handbag. 这个人提着一个黑色的小塑料提袋。
- The old trade in black ivory is on more. 昔日非洲黑奴的买卖已不复存。
- The black sedan suddenly drew out into the traffic. 黑色轿车突然开动，驶进了车流。
- I have a snag in my best black tights. 我最好的一条黑裤袜给划破了。
- He fell down the stairs and was all black and blue. 他从楼梯跌下而青一块紫一块了。
- Black and white show a striking contrast. 黑和白形成明显的对比。
- She buy a black nightie to wear on her honeymoon. 她买了一件黑色睡衣准备在蜜月时穿。
- Jim staked all his money on the black horse. 吉姆把所有的钱都押在那匹黑马上了。
- During the war we had to black out all our windows. 战时我们必须用黑布遮着窗口以免透光。
- "I thought so," he said. "Do you not see what they are doing? In another moment they are going to pack blasting powder into that hole." “我看是这样”他说，“你们没看见他们在干什么吗？过一会儿，他们就要往打好的孔里装炸药。”
- My brother is the black sheep of the family. 我弟弟是我们家的害群之马。
- The lorry skidded on a stretch of black ice. 货车在薄冰路面上打滑。
