农业的特点是时空差异和变异性大，生产稳定性和可控程度差。
The characteristic of agriculture is space-time the difference and variability are great, it is bad to produce the stability and controllable degree.
它是差异透性的，故可控制分子和离子的进出。
It is differentially permeable, hence it can control the entrance and exit of molecules and ions.
年龄、职位差异、管理年限、所学专业、学历、下属人数、企业属性等可控变量对素质要素的认同度有影响。
Some controlled variables, such as age, years of management, specialty, educational level, number of underlings and enterprise property, have influence on factors approved.
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