基本解释托钻同根派生 英汉例句endstone for pin pallet escape wheel 销钉式擒纵轮托钻endstone for pallet fork 擒纵叉托钻endstone for pin pallet fork 销钉式擒纵叉托钻endstone for split-second wheel 双秒针轮托钻endstone for escape wheel 擒纵轮托钻