free-pollutant food 无公害食品
free-pollutant apple 绿色苹果
free-pollutant culture 无公害栽培
free-pollutant apple orchard 无公害栽培苹果园
Pollutant-free 无污染的
pollutant-free fertilizer 无公害肥料
Pollutant-free commodities 无污染的产品
pollutant-free cultivation 无公害栽培
new type pollutant-free 新型无公害
Therefore, study on cultivation theory and techniques application of high quality and free-pollutant red Fuji apple is urgent.
因此,急需进行红富士苹果优质无公害栽培理论及配套技术应用研究。
参考来源 - 红富士苹果优质无公害栽培理论、配套技术及其应用的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
This is because the reduced SO2 may simply free another pollutant, ammonia, to react instead with abundant NOX creating ammonium nitrate particles.
因为二氧化硫虽然减少了，另外一种被释放出来的污染物——氨，却通过大气化学反应生成了大量的硝酸氨颗粒。
The optimized formula is free from the restrictions of kinds and Numbers of pollutant, including assessment formula of single index as a special example.
该公式不受指标种类和数目多少限制，并把单指标指数评价公式作为特例包括在内。
The paper describes the importance and necessity of building pollutant-free mines to achieve sustainable development of mining industry.
本文简述了建立无废矿山的必要性，着重介绍了金岭铁矿建设无废矿山所做的尝试及今后在这一方面的打算。
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