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- Keywords rotation jet;bore expanded hole;gas discharge;experimental research; 旋转射流;钻孔扩孔;瓦斯抽排;试验研究;
- bore expanded hole 钻孔扩孔
- Tangential residual stress distribution around cold expanded hole is determined by combining theoretical calculation with experiment results. 本文用含孔边穿透裂纹的冷胀孔、未胀孔剩余寿命之比来评价孔冷胀强化工艺延长裂纹扩展寿命的效果。
- The residual stress of the cold expanded hole of aluminum alloy LY12CZ and LC4CS, when bush is not used, has an obvious trend towards attenuation, and the change in attenuation is characterized by different speed forms. 以LY12CZ与LC4CS为基材的铝合金无衬套冷胀残余应力在外加循环应力作用下有明显的衰减趋势，并以不同速率形式反映了衰减的变化差异。
- In addition, because of the large pipe diameter, more bore expanding levels are needed, and it interferes with stratum by impact. 加之穿越管径大，扩孔级数较多，对地层的冲击扰动较大，增加了塌孔的可能性，施工难度很大。
- His strength in a crisis is an ace in the hole. 临危不惧是他的看家本领。
- Our torpedo boats bore down on the enemy cruiser. 我方面鱼雷艇向敌巡洋舰冲去。
- The company is eager to expand into new markets. 那家公司急欲开辟新的市场。
- 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。
- An enemy frigate bore down on the sloop. 一艘敌驱逐舰向这只护航舰逼过来。
- The bird picked a hole in the ice with its beak. 那鸟在冰上啄出了一个洞。
- The child has picked a hole in his new jumper. 孩子的新毛衣上勾了一个洞。
- Our society expanded into a worldwide organization. 我们的协会扩大成一个世界性组织。
- His face expanded in a smile of welcome. 他喜笑颜开地表示欢迎。
- Stick your hand in and see what's in the hole. 把手伸进去，看看洞里有什么。
- He bore down as he approached the finish line. 接近终点线时，他拼尽全力加速。
- Our foreign trade has expanded during recent years. 近年来我们的对外贸易有所增加。
- The dog skins through the small hole in the wall. 那条狗勉强钻过小小的墙洞。
- Our soldiers bore away the palm in the battle. 我们的战士赢得了这场战斗。
- 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。
