spring divider

... 弹簧圆规，弹簧分规 spring bow instrument 弹簧分规 spring divider 弹簧圆规 spring bow compass ...

 spring bow divider

... spring bow compasse 弹簧圆规 spring bow divider 弹簧分规 spring bracket 弹簧架 ...

[测] bow divider

... 弹簧分规，小分规 bow divider 弹簧圆规，弹簧分规 spring bow instrument 弹簧两脚规，弹簧分规 hair dividers ...

 spring pider

... condenser pider 电容分压器 spring pider 弹簧分规 pider callipers 两脚规 ...