seal spring造句

• Sealed spring loaded safety valve
  封闭式弹簧安全阀
• Seal spring compression ring
  密封弹簧压圈
• Compression spring , taper springs , torsion springs , oil seal springs , garter spring battery springs and some more wire - forming related products
  压缩弹簧锥状弹簧扭簧杠脚弹簧油封弹簧电池弹簧弹夹弹簧安全弹簧双扭簧以及各式线材成型产品。