There are two primary types, hydraulic and mechanical jars.
震击器主要有两类：液压震击器和机械震击器。
The two top scores are your primary and secondary types.
分数最高的那两个分数就是你的基本和次级类型。
There are two primary relationship types: dynamic and static.
有两种基本的关系类型：动态关系和静态关系。
Two primary relationship types exist: dynamic and static.
两个初级关系类型为：动态和静态。
Two primary relationship types exist: dynamic and static.
两个初级关系类型为：动态和静态。
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