Metallic gaskets and ring joints 金属垫片和金属环
As your baby ring joints, I do not know.
至于你的孩子关节响，我就不知道了。
Consequently, the writer approaches the marketing method of the health protection products from the four ring joints of strategy, marketing team, distribution and advertisement tactic.
而后笔者从战略、队伍、通路、广告策略四个环节对于保健品营销之路进行了探讨。
Plastics piping systems. elastomeric sealing ring type joints and mechanical joints for thermoplastics pressure piping. test method for leaktightness under external hydrostatic pressure.
塑料管道系统。热塑塑料压力管道用的弹性密封环型接头和机械接头。外部液压条件下防漏密封试验方法。
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