Better cut the shoe than pinch the foot . 宁愿把鞋铰开，也不能让脚受屈。
There is a frictionless hinge at c . C点是无摩擦铰。
But the bending moment at the central hinge must vanish . 但在中间铰处，弯矩必定为零。
Taps, reamers, drills, saws, milling cutters, burnishing tools, and so on, have all been successfully plated . 丝锥、铰刀、钻头、锯片、铣切刀具、磨光工具以及其它等等，所有这些方面的片镀都是很成功的。
Machine reamers with edge inclination with parallel shanks 带刃倾角直柄机用铰刀
Morse and metric taper reamers with parallel shanks 直柄莫氏圆锥和公制圆锥铰刀
Reamers ; technical specifications for reamers with shaft 铰刀.带柄铰刀的技术规范
Hand reamers with parallel shank , adjustable , slotted 圆柱手柄可调式有槽手铰刀
Machine reamers with parallel shanks ; stepped shanks 带直柄的机用铰刀.阶形刀柄
Machine reamers with morse taper shanks with carbide tips 硬质合金锥柄机用铰刀
