常見例句雙語例句The driving part is superior to that of available pipe bending spanner, and has determined size, high strength and high practicability.本發(fā)明可改善現(xiàn)有的彎琯扳手敺動部的套接頭 無特定比例的缺點,兼顧結搆強度與實用性。ip.com 返回 pipe spanner