Baekeland's original goal was to come up with a shellac and varnish substitute that, after being applied to a piece of wood, would harden into an insoluble state by a chemical reaction.

貝克蘭德最初的目標(biāo)是找出蟲膠和清漆替代品欧美视频在线中文字幕，加入一些木屑后亚洲色一色噜一噜噜噜性色av，將硬化成不受化學(xué)反應(yīng)的非溶解性固體谁有免费黄色网站?。

Soluble in toluene, slightly soluble in hexane and alcohol and insoluble in water.

溶于甲苯国产精品视频三区，微溶于己烷和酒精www.madou.福利，不溶于水1级A片。

Fiber is the indigestible carbohydrate found in plant cell walls and is either soluble or insoluble.

纖維是在植物細(xì)胞壁中不能消化的碳水化合物色色月，分水溶性及非水溶性兩種。

A new branch of mathematics, dealing with infinitely small quantities, gives now in other more complex problems of dynamics solutions of problems that seemed insoluble.

數(shù)學(xué)的一個新的分支在解決了處理無窮小數(shù)的技術(shù)后亚洲日韩欧美在线视频播放，現(xiàn)已能在其他更為復(fù)雜的運動問題上求得對以前似乎解決不了的那些問題的答案亚洲中文字幕在线四区。

Properties White powder, inodorous, non-toxic, soluble in dilute alkali solution, carbon disulfide, benzene, acetone, dichloromethane and a little soluble in chloroform, insoluble in alcohol, carbon tetrachloride and ethyl acetate.

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The insolubility of certain inorganic arsenic compounds is the basis of many hydrometallurgical arsenic removal processes, and the insoluble product is often a disposal material.

對主要的無機＋5價砷化合物的溶解是許多濕法冶金法除砷工藝的基礎(chǔ)欧美成人嘿咻在线视频，并且溶解的產(chǎn)物通常是一種可處理的物質(zhì)。

This is not a trivial problem. It is not an insoluble problem.

這不是雞毛蒜皮的問題免费人成a大片在线观看日本，要解決它也不是不可能亚洲永久精品一区二区在线观看。

Many of the world's problems are insoluble from the human standpoint; this is one of them.

世界上有許多問題從人的觀點來看是無法解決的；中東沖突就是其中之一在线青草香蕉在线播放网站视频。

Insoluble in water, do not react with water ...

不溶于水黄色带国产网站，不與水反應(yīng)。欧美精品性XXXX。午夜免费福利网站。。

The problem is not simple; however, that does not mean it is insoluble.

問題并不簡單男女视频在线一区免费观看；然而成年av天堂首页，那并不意味著它是不能解決的。