农业生产过程中，农药、化肥、农膜等的大量使用造成了严重的大气、土壤和水污染。
The atmosphere, the soil and the water had been polluted because of using the agricultural chemicals, the chemical fertilizer and the agricultural membrane.
户均不过十亩，且地块高度插花细碎局面，加剧了我国农业生产过程中的外部性问题。
The situation of less than 10 mu per family and high-level fragmented land speeds up the disturb of externality in the process of agricultural production.
气力输送已经在工农业生产过程中得到了广泛的应用，其参数主要有气流速度、浓度比、能耗指标等。
Pneumatic conveying has been widely used in agricultural and industrial production, the parameters of which are air velocity, solid-to-air ratio and energy consumption.
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