【机】 变速杆

你看到那波棍嘛，如你打开顶部你会找到一颗红色掣。你做什麽也好，不要碰它。

angle ratio curve of steering gear【车辆】

variable-speed gear (change gear, gear change box)

planetary gear, differential gear, belt drive

travelling gear for more than one rail gauge

angular gear

two-stage harmonic gear drive【机】

gear teeth grinding by rolling

gear broach-milling