3) large ratio of propeller diameter to ship draft
大径深比
4) micro deep hole
微细深孔
1.
The device is made up of the transistor ultrasonic generator, cylindrical piezoelectric ceramic transducer, half wave resonance cone amplitude rod and tool system, and it can be applied to the precision and ultra precision machining of micro deep holes in soft materials.
基于高频振动切削原理 ,设计了一种振频 2 0± 1KHz、振幅 2 5 μm的新型超声轴向振动钻削装置 ,该装置由数字锁相环频率自动跟踪式晶体管型超声波发生器、轴向半波长圆柱型压电陶瓷换能器、半波谐振圆锥型变幅杆以及工具系统组成 ,可在软质材料上实现微细深孔的精密、超精密加
5) large-diameter deep hole
大孔径深孔
1.
The problems in slope and its construction of old surface mine are analyzed,the presplitting blasting parameters suitable for large-diameter deep hole of surface mine are determined in practice based upon the analysis of mine rock breaking principle.
分析了老龄露天矿山的边坡和边坡施工中存在的问题,通过对爆破过程中矿岩破碎原理的分析,在实践中确定了适合露天大孔径深孔爆破条件的预裂爆破参数。
6) deep-hole with large diameter
大直径深孔
1.
According to the material properties and machinability of oxygen-free copper,an experiment of the trepanning machining of deep-hole with large diameter on oxygen-free copper was carried out,and the trepanning drill and the trepanning process were designed.
根据无氧铜的材料特性和切削加工性能,进行了无氧铜的大直径深孔套料加工试验,并设计了套料钻和加工工艺。
补充资料：被酒径卧比觉已五鼓矣
【诗文】：
俗事驱人挽不回，经年无地濯氛埃。
酒酣稍觉客愁破，睡觉忽闻山雨来。
窗外树寒无鸟宿，壼中水暖有梅开。
五更欲起先惆怅，烛下文书已作堆。
【注释】：
【出处】：
俗事驱人挽不回，经年无地濯氛埃。
酒酣稍觉客愁破，睡觉忽闻山雨来。
窗外树寒无鸟宿，壼中水暖有梅开。
五更欲起先惆怅，烛下文书已作堆。
【注释】：
【出处】：
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条