查询词典 double angle formulas

angle at the center：中心角

"极向角","angle" | "中心角","angle at the center" | "角度规","angle gage"

angle bar strap：衬角铁

angle at zenith 天顶角 | angle bar strap 衬角铁 | angle bar 角铁

angle between chord and tangent：弦和切线的角

angle at center 圆心角 | angle between chord and tangent 弦和切线的角 | angle function 角函数

angle bisector：角平分线 ;分角线

angle bisection 角平分 | angle bisector 角平分线 ;分角线 | angle in the alternate segment 交错弓形的圆周角

angle brace：角撑

angle bending machine 弯曲机 | angle brace 角撑 | angle bracket 角铁托

angle brace：斜撑

angle block 角铁 | angle brace 斜撑 | angle bracket 角形托座

angle brace：隅掌, 角铁撑, 角撑

angle block | 角铁, 弯板 | angle brace | 隅掌, 角铁撑, 角撑 | angle bracket | 角撑架, 角铁托, 角形托座

angle brace：角铁撑,角撑

angle block 角铁,弯板 | angle brace 角铁撑,角撑 | angle of elevation 仰角

angle bracket：角撑架

angle block 转向滑车 | angle bracket 角撑架 | angle bracket 角钢托坐

angle bracket：角形托架;角钢撑架;"狗臂架

angle bar 角铁 | angle bracket 角形托架;角钢撑架;"狗臂架" | angle change 角变

the bird of wonder：凤凰;长生鸟

the bird of peace鸽子 | the bird of prey 猛禽 | the bird of wonder凤凰;长生鸟

flange rail：平底轨条

"凸缘皮带轮","flange pulley" | "平底轨条","flange rail" | "凸缘肋","flange rib"