The horizontal spread of the rectangular V-type curved otterboard increased by 43.
矩形V型曲面网板的水平扩张力可增大43。
2
Rectangular V-type curved otterboard and V-type curved otterboard were tested to compare the operation characteristics and production effect during the three trips.
通过3个航次矩形V型曲面网板与V型网板作业性能和生产效果的对比试验。
3
In addition, the fire-retardant plastic films provided by the utility model can be transparent and the back face of the aluminum foils can be connected with at least one layer of otterboard material.