您要查找的是不是：
- altitude hole effect 高度空穴效应
- This paper introduces the existing problem of YPA hole packer in practicaluse,and sealing hole effect of improved hole packer. 介绍了YPA型封孔器在实际使用中存在的问题，以及改进后的封孔器的封孔效果。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- The acoustic generator combined with aerated-water-discharge technique can bring plugs out of hole effectively and remove plugs in the formation, dredge fluid channels, improve percolating environment and increase oil well productivity. 该声波发生器与混气水排液工艺相结合,可以达到解除地层堵塞、疏通液流通道、改善油层内部流体的渗流条件、增加油水井产能的目的,而且可以将堵塞物有效携带出井筒。
- We are flying at an altitude of 20000 feet. 我们的飞行高度是20000英尺。
- The airliner flew at an altitude of 20000ft. 客机在两万英尺的高度飞行。
- He chiseled a hole in the door to fit a new lock. 他在门上凿了个孔，以便装一把新锁。
- The bird picked a hole in the ice with its beak. 那鸟在冰上啄出了一个洞。
- At this altitude you often get strong winds. 在这一纬度地区，经常有大风。
- The child has picked a hole in his new jumper. 孩子的新毛衣上勾了一个洞。
- The plane flew at an altitude of30000 feet. 飞机在三万英尺的高空飞行。
- Theoretical and Experimental Study on Empty Hole Effect in Tunnel Cut Blasting 井巷掏槽爆破中空孔效应的理论与试验分析
- Punishment had very little effect on him. 惩罚对他没有什么效果。
- Stick your hand in and see what's in the hole. 把手伸进去，看看洞里有什么。
- The dog skins through the small hole in the wall. 那条狗勉强钻过小小的墙洞。
- The men in the hole sent up for more equipment. 在洞穴中的人们向上面要求再给他们一些设备。
- It's certain that every effect must have a cause. 无疑，每个结果必定有其原因。
- The mice have nibbled a hole in the cheese. 老鼠在奶酪上啃出了一个洞。
- That measure will be carried into effect very soon. 这项措施将在最近付诸实施。
- My plan has not been carried out with effect. 我的计划未被有效地执行。
