公差，锻造容器及封头的英文

tolerances, forged shells and heads

• 公差:    public errand; non ...
• 锻造:    forge; forging; sm ...
• 容器:    container; holder; ...
• 及:    reach; come up to
• 封:    close; seal
• 头:    5点就得动身 have to sta ...