chance variable 中文意思是什麼
chance variable
解釋
機會變量-
To reduce the chance of overflow errors in odbc and db - library programs, make all variable declarations for the results of averages or sums the data type
為減少odbc和db - library程序中出現溢出錯誤的可能性，請將平均或匯總結果的所有變量聲明都設置為數據類型 -
As far as sustainable development theories are concerned, this article summarizes the sustainable development conception, the studying orientation of its, and the economic studying trends, etc. then, in the aspect of asd, this article expounds its idea, studying content and studying trait, etc. on the basis of that, the author sets forth the theories and practical significance of studying asd in the mid and west region of china from the strategy adjustment of china regional development, economic globalization as well as intellectual economic developing trends, etc. ii. analyse and grasp major factors and outstanding barriers of asd in the mid and west region of china as a whole. after qualitative and quantitative analysis, we conclude the superiority of asd in the mid and west region mainly embodies many ways, such as abundant land resources, munificent agriculture organism resources, variable natural climates, the central government ' s readjustment of development strategy as well as the historical chance that new economic background gives, etc
在此基礎上，從中國區域發展戰略調整、經濟全球化、知識經濟發展趨勢等方面來認識中西部地區農業可持續發展的背景。 （二）從總體上分析和把握中西部地區農業可持續發展的主要影響因素及突出障礙。通過定性與定量分析后認為，中西部地區農業可持續發展的優勢主要體現在土地資源較豐富、農業生物資源條件得天獨厚、自然氣候千差萬別、國家發展戰略調整及新經濟背景提供了歷史機遇；主要障礙體現在經濟社會發展與農業爭地矛盾突出、水土流失十分嚴重、土地沙漠化加劇、水資源的困擾、農業生態環境破壞嚴重、加上體制與觀念約束等。
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