functional process造句

Allelochemicals ' activity varies with temperature , photoperiod , water and soils during natural processes , with its initial concentration , compound structure and mixed degree during functional processes , with plant accessions , tissues and maturity within - species , and with research techniques and operation processes
化感物质活性在自然过程中，由于温度、光周期、水和土壤等的不同而变化，在功能过程中随其初始浓度、化合物结构和混合程度不同而变化，在植物体内由于组织器和成熟程度不同而变化，而研究技术和操作过程也影响化感物质的活性。
It's difficult to find functional process in a sentence. 用functional process造句挺难的