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。
2
The transparent platy member and the inserting piece are arranged with a plurality of optical line reflection points, or optical line refraction points, or laser breakdown points.
透明板状构件和插片中设置有复数个光线反射点、或者光线折射点、或者激光破坏点。
3
Steep and antithetic platy structure of rock mass and geomorphology of the longitudinal valley in the dam site area cause wide-range toppling deformation on the cross-strait slope.