caliber rule

例句：

1. 1.The gun was calibered for a specific range of fire.
   这把枪被校准了特定射程的火力。
2. 2. The engineer measured the caliber of the pipe to ensure it would fit properly.
   工程师测量了管道的口径，以确保它能够正确安装。
3. 3.The car's engine has a caliber that matches the manufacturer's specifications.
   这辆车的发动机具有与制造商规格相匹配的口径。