撒播机 broadcast sower
- “空中拖拉机”,另一家产生撒播农用机的公司,去年扩大业务到军用飞机领域。
Air Tractor, another firm that makes crop dusters, branched out into warplanes last year. - 试验田得到改造,以适应氮肥撒播机施用氮肥的需要,这也许减少了一氧化二氮的排放。
The test plots were managed to match nitrogen application with nitrogen use, which may have reduced nitrous oxide emission.
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