在革掉套管接箍和圆扣套管的前提下，建议采用无接箍、特殊扣型套管，以提高深井的套管强度。
On the premise of abrogating the casing collars and the casings with round thread. the casings with special thread and without collar are recommended to be used. in order…
本文对V形圆扣套管联接强度失效的主要形式，即套管联接螺纹滑扣(或滑脱)失效的机理进行了分析研究。
The main failure form of V-round-thread casing, that is, the mechanism of thread connection slipping off, is analyzed in this paper.
设计师克里斯提·布鲁托浅粉花瓣凉鞋是一种脚踝带上有繁复的带扣、鞋面上有两个花瓣、圆头露趾鞋尖的浅粉色凉鞋。
Designer Christian Louboutin Petal Sandals Light Pink is a kind of pink sandals with buckle detail at ankle strap, two petals along vamp, and a round open toe.
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