Through the field tests, the machine reaches the aim to resolve effectively the difficult problem on direction control during horizontal drilling.
该设备经过现场试验，取得了理想的效果，有效地解决了水平螺旋钻机钻进过程中控向的难题。
Objective: The aim of this study is to evaluate the feasibility of using vertical bone-separating technique in widening the horizontal lack of alveolar ridge in implantology.
目的：探讨临床种植手术中针对牙槽脊水平宽度不足的病例应用垂直骨劈开法的治疗效果。
Aim To introduce the logical definition of the horizontal sum of effect algebras and study the uniqueness of sequential products on effect algebra.
给出了效应代数水平和的定义，借助于水平和，列举并讨论了一个效应代数可以具有许多个序列积。
Aim To introduce the logical definition of the horizontal sum of effect algebras and study the uniqueness of sequential products on effect algebra.
给出了效应代数水平和的定义，借助于水平和，列举并讨论了一个效应代数可以具有许多个序列积。
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