词汇	timing pin
释义	timing pin 定时销
随便看	aerial insert aerial inspection Aerial Inspection Instrument aerial installation aerial insulated cable aerial insulator Aerial Intercept Missile aerial ionization coefficient aerialism aerial levelling Aerial lift aerial lift device with insulated arm aerial lift vehicle aerial light aerial light hours aerial lighthouse aerial light house aerial line aerial, line aerial line distribution system aerial line map aerial liner aerialist aerial Line survey section plane aerial line suspension