拱形

domed ceiling

拱形天花板

dome light 座舱顶灯 | domed ceiling 拱形天花板 | domestic fuel 家用燃料

arch bar

拱形横条

arc welding electrode 电焊条 | arch bar 拱形横条 | area equalization method 等面积(补强)法

arch barrel

拱形筒壳

arch bar 拱板 | arch barrel 拱形筒壳 | arch bay 拱跨

arch brace

拱形支撑

arch bond ==> 拱砌合 | arch brace ==> 拱形支撑 | arch braced roof ==> 拱支架屋顶,拱支桁架

arch brick

拱形砖

arch bond 拱砌合 | arch brick 拱形砖 | arch bridge 拱桥

arch buttress

拱形支墩

arch bridge 拱桥 | arch buttress 拱形支墩 | arch camber 拱矢

arch press

拱式压力机,拱形压力机

arch pitch ==> 拱的高跨比 | arch press ==> 拱式压力机,拱形压力机 | arch pressure ==> 拱压力

Ball bearing with arch raceway outer ring

外圈拱形沟道球轴承

Ball bearing tandem mounting 成对串联安装角接触球轴承 | Ball bearing with arch raceway outer ring 外圈拱形沟道球轴承 | Ball bearing with filling slot 有装球缺口的球轴承

arch spring fastening

拱形弹性扣件

arch span || 拱跨 | arch spring fastening || 拱形弹性扣件 | arch springing hinge || 拱脚铰

support arch

拱形支架

support 支持 | support arch 拱形支架 | support density 支架密度

colonial rule：殖民统治

colonial protectorate;殖民保护地;殖民被保护国;; | colonial rule;殖民统治;; | Colonial Secretary;辅政司;;

matrimonial agency：婚姻介绍所

21 deep love 深沉的爱情 | 22 matrimonial agency 婚姻介绍所 | 23 lover,sweetheart 情人