采用微波辅助提取方法, 以乙酸为提取剂从辣椒粉中提取辣椒素.Capsaicin is extracted from the powder of capsicum with microwave assisted, and acid the extraction solvent.以乙醇水溶液为提取剂,应用超声波技术从荞麦壳中提取色素.In this paper , we use alcohol solvent extracting buck...
No one knows how many people currently surf the Net.没人知道现在有多少人在网上冲浪。I sometimes get up at three or four in the morning and I surf the net.“我有时候早上三或四点起床,在网上冲浪. ”B : Yes. By the way do you often surf the Net?是的,顺便问一下,你经常上网...
Relative pronouns and adverbs introduce attributive clauses.关系代词和关系副词引导定语从句.Attributive adjectives precede the noun.定语形容词位于名词前.An attributive noun functions as an adjective.定语性名词起形容词作用....
As a businessman, you must do everything to avoid jeopardizing your fortune by making bad investments.作为商人, 你应该千方百计地避免因投资不当而损失一大笔钱.He came to this country 20 years ago and is the archetype of the successful Asian busines...