把石油工业中多项专用技术与水利工程的实际需要相结合，创造了水力插板技术。
Integrating the many specific techniques of petroleum industry with the actual need of the hydraulic engineering, the technique of hydraulic panel was created.
插槽中设置有一个插片，插 片由透明板状构件构成。
The slot is arranged with an inserting piece, the inserting piece is composed by the transparent platy member.
插槽中设置有一个插片，插 片由透明板状构件构成。
The slot is arranged with an inserting piece, the inserting piece is composed by the transparent platy member.
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