采用取样测数法和合并测产法分别对中双4号、华杂6号甘篮型油菜产量进行了测定。
The methods of sampling estimation data and amalgamating yield estimation were introduced to estimate theory yield of zhongshuang 4 and Huaza 6 of Brassica napus L. in this paper .
篮和平盘式取样器加大了对水流的阻力。
The basket and pan types cause an increased resistance to flow.
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