use-proved product 中文意思是什麼

use-proved product 解釋
使用合格產品
  • use : n 1 使用，利用，應用；使用的機會[需要]。2 使用的能力。3 使用的自由，使用權。4 使用法。5 用途；效...
  • proved : prove的過去式和過去分詞
  • product : n. 1. 產物，產品；製品；產量；出產。2. 結果，成果。3. 創作，作品。4. 【化學】生成物；【數學】積，乘積。
  1. The traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good

    縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好
  2. Abstract : the traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good

    文摘:縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好
  3. Then, we obtain some new continuous selection theorems in g - convex spaces. through the use of it, some new coincidence theorems are proved in noncompact g - convex spaces or in product g - convex spaces

    最後，我們還在g -凸空間內得到了一些新的連續選擇定理，並利用該定理證明了非緊g -凸空間內及乘積g -凸空間內的重合點定理。
  4. Any problems relating to the design of dry or oil - filled electric motors immersed in the product have been overcome and the shaft passage and cable gland sealing systems in use today have proved highly satisfactory in a wide range of applications

    乾式或油浸式轉子設計的有關問題已被攻克，目前所使用的軸和電纜填料密封系統已被證明在各種工況下是十分滿意的。
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