a semiconductor laser with external optical feedback  外腔反馈式半导体激光器

blade with external fir-tree root  外包枞树形叶根叶片

blade with external inverted-T-root  外包倒T型叶根叶片

blade with external T-root  外包T形叶根叶片

calculator with external program input  具外部程序输入计算器; 可外输入程序之计算器

centrifugal fan with external rotor  外转子离心式通风机

doubly salient permanent magnet motor with external motor  外转子双凸极永磁电动机

effective sub-critical neutron multiplication factor k s with external neutron source  有源次临界中子倍增因子ks

evaporator with external heating unit  外热式蒸发器

external applying  外涂; 外用; 外敷

flanged sleeve with external thread  外螺纹凸缘套管

Parallel pins with external thread  螺纹圆柱销

Process with external compression  外压缩流程

reinforced with external steel encased  外包钢加固法

strengthening with external bonding  粘贴加固

strengthening with external steel  外包钢加固

strengthening with external tendons  体外预应力加固

surge arrester with external series gaps  外串间隙避雷器

toroidal system with external winding  外部线圈环形装置