hand wheel type skylight controlling gearhand-wheel type skylight controlling gear式: type; style天窗: scuttle; trap-door; skylight ...传动装置: transmission; gearbox; geari ...链轮式天窗传动装置: chain wheel type skylight control gear螺杆式天窗传动装置: screw driving skylight controlling gear下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:手轮式天窗传动装置，即可在微信中查询翻译
