ceramic capacitor 搪瓷电容 certification 证书 certifying body 认证机关 chain 链条 chain block 手拉葫芦 chain bracket 链条托架 chain drive 链传动 chain drive elevator 链驱动升降机 chain drive machine 链驱动机 chain gear 链轮 chain guard 链防护罩 chain link "链节,链环" chain pitch 链条节距 chain ...