minor diameter of thread 螺纹内径 ; 罗纹内径
minor diameter of screw 螺纹小径 ; 螺栓小径
minor diameter 小径 ; 内径 ; 直径小的
Minor Diameter Internal 内花键小径
Minor Diameter External 外花键小径
minor diameter bar 小直径钻杆
minor diameter tube 小直径管
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Therefore, a series of special expanded packers with various kinds of advantages such as minor diameter, small spacing, and high bearing pressure, and simplify operation etc.
为此研制开发小直径、小卡距、承压高、易操作的膨胀式封隔器系列，设计出适合套变井选层酸化、压裂以及薄层措施改造的多种工艺管柱。
This paper introduces driving rock drift with minor diameter bit, minor diameter cartridage and minor diameter bolt, it can realize smooth blasting, roadway speed is raised, driving cost is reduced.
在岩巷掘进过程中使用小直经钻尖，小直径药卷和小直径锚杆，可实现光面爆破，有效提高成巷建设，降低掘进成本。
The outer cup includes a major diameter mounting flange portion terminating in a curl, a minor diameter wear sleeve portion, and a transition portion joining the major and minor diameter portions.
外层杯包括大直径延伸段在卷曲的部分，一小直径套管磨损部分终止，并加入一个过渡的部分主要和次要直径部分。
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