body of valve

例句：

1. 1.The engineer carefully inspected the body of the valve to ensure it was properly sealed.
   工程师仔细检查了阀门的主体，确保其密封得当。
2. 2. The valve body is made from stainless steel to withstand high pressures.
   阀门主体由不锈钢制成，以承受高压。
3. 3.During maintenance, the technician replaced the damaged valve body.
   在维护期间，技术人员更换了损坏的阀门主体。