main body cover 中文意思是什麼
main body cover
解釋
主體外殼-
The technical difficulties in low - alcohol liquor production mainly cover the following aspects : the bleeding of ethyl palmitate, ethyl oleate and ethyl linoleate etc. after alcohol - degrading might produce the lost of gloss, turbidity and precipitate ; the suspended substances produced in distillation and packing, the production water, and the metal ions contained in production containers are the main reasons for the precipitate in liquor ; besides, the hydrolization reaction and esterification reaction of liquor body during shelf period would also produce the lost of gloss, turbidity and precipitate
低度白酒生產過程的技術難點主要是白酒降度產生失光、渾濁、沉澱，其主要原因是由於降度后棕櫚酸乙酯、油酸乙酯和亞油酸乙酯等析出；蒸餾、包裝等過程帶入的懸浮物，生產用水、生產容器所含金屬離子等為低度白酒產生沉澱的主要原因；還有低度白酒酒體在貨架期的水解、酯化反應也會引起低度白酒產生失光、渾濁和沉澱。 -
Furthermore, on the basis of consultancies, inquiries and evaluations from multiple sources, the model for predicting soil and water loss in dandong - zhuanghe highway construction is developed. moreover, considering the characteristics of the highway, the covering area of the project is divided into three parts such as main body area, soil - fetching area and soil - spoiling area. for these three preventive areas, the perfect precaution measures for preventing and curing the soil and water loss during the road construction in which a number of vegetal cover measures are taken
論文中詳細調查並介紹了項目情況及沿線自然、社會經濟狀況；收集研究了公路建設項目水土流失預測的基本內容和方法，在多方查詢、請教專家及分析研究的基礎上，提出了丹莊高速公路水土流失預測模型，針對項目不同區域進行了水土流失預測和分析，為水土保持措施的設計提供了定量依據；論文根據高速公路項目的特點，將丹東至莊河高速公路項目區分成了主體工程、取土場、棄土場三個水土流失防治區，並在初步設計文件的基礎上，針對三個水土流失防治區進行了較為完善的水土保持防治措施設計；論文在丹東至莊河高速公路水土保持方案設計中大量採用了植被防護措施，為了更有力地指導植被措施的施工，論文中還就植被保持水土的有效性進行了研究探討。
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