1、
2、
the horizontal spread of the rectangular v-type curved otter board increased by 43.
矩形V型曲面网板的水平扩张力可增大43。
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3、
4、
the middle lower part of the bucket body (1) is also fixed with an otter board (3);
在所述的斗身（1）的中下部还固定安置一个网板（3）；
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