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- The ether soluble compounds of the reaction product were analyzed by GC/MS.The major iden tified compounds were pyrazine and furan compounds. 該反應產(chǎn)物的醚溶性成分經(jīng)GC／MS分析顯示，其主要成分為吡嗪類(lèi)和呋喃類(lèi)化合物。
- We study the calculation formula and its application of H+concentration in soluble acidic saline solution of tribasic acid(except NH4+ salt) in this paper. 對三元酸易溶酸式鹽溶液(銨鹽除外)中H+離子濃度的計算公式及公式的應用進(jìn)行討論。
- Four compounds were isolated from the petroleum ether soluble portion,identified as 28-aldehyde-taraxerenone(1),28-hydroxy-taraxerenone(2),epi-friedelanol(3), 4-methyl stigmast-7-en-3-ol(4). 從石油醚部位分離鑒定了4個(gè)化合物:3-羰基-14-taraxeren-28-醛(1),3-羰基-14-taraxeren-28-醇(2),表無(wú)羈萜醇(3),4-甲基-豆甾-7-烯-3-醇(4);
- The aqueous phase were acidified with sulfuric acid, taken to dryness and extracted with methanol (water soluble acidic fractions) and concentrated for TMS derivatives. 有機相(堿性和中性部分)經(jīng)濃縮并硅烷化，水相經(jīng)酸化、吹干、提取(提取物為酸性水溶性部分)并硅烷化。
- The damage to materials caused by acidic matter in atmosphere is the main portion of the economic loss caused by acid precipitation. 大氣中的酸性物質(zhì)對暴露在大氣中的材料的破壞是酸沉降經(jīng)濟損失中的重要部分。
- The deduced amino acid sequence is 77% identical to the gene from Citrus reticulata (GenBank,AF312229), and only 33% identical to the gene from Fragaria ananassa (GenBank AF000521), was suggested to encode a soluble acid invertase. 在GenBank中進(jìn)行同源性檢索的結果表明,該成員編碼的氨基酸與植物可溶性酸性轉化酶的氨基酸同源性較高,與寬皮柑橘(GenBank登記號AF312229)可溶性酸性轉化酶基因編碼的氨基酸具有77%25的同源性,而與定位于細胞壁的(不溶性)酸性轉化酶同源性較低,最高僅33%25(Fagaria ananassa,GenBank AF000521)。
- Some reactions such as those between soluble acids and bases occur very rapidly. 有些反應，象酸堿溶液之間的反應進(jìn)行得很快。
- Thus, large quantities of highly soluble acids and caffeine dissolve into the cup. 因此，咖啡里便含有大量易于溶解的酸及咖啡因。
- petroleum ether soluble matter 石油醚可溶物
- A whiff of ether will put you out in a few seconds. 一劑乙醚幾秒鐘后就會(huì )使你失去知覺(jué)。
- This kind of tablet is soluble in water. 這種藥片能溶于水。
- Some of your scientists see energy, matter, ether. 有些科學(xué)家看見(jiàn)的是能量、物質(zhì)、以太。
- These problems are not readily soluble. 這些問(wèn)題不容易解決。
- This substance is soluble in alcohol. 這種物質(zhì)能夠溶解在酒精中。
- The capsule is filled with small soluble cases. 膠囊里充滿(mǎn)了可溶的小顆粒。
- He gave me a taste of his acid wit. 他讓我嘗到了他敏銳尖刻之機智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把銀器的表面腐蝕了。
- To wash or percolate the soluble matter from. 把桌布上的墨跡洗掉。
- The soil becomes more and more acidic as pollution mounts up. 隨著(zhù)污染的加劇，土壤的酸化越來(lái)越嚴重。
