探讨了醇酸物质的量比、催化剂用量、反应时间等因素对酯收率的影响。
The influence of the molar ratio of n-amyl alcohol and acetic acid, the quantity of the catalyst, the reaction time etc on the ester yield was discussed.
考察了催化剂用量、醇酸物质的量比、带水剂种类、反应时间等因素对收率的影响。
Many synthesis parameters were investigated such as amount of catalyst, reaction time, molar ratio of alcohol to acid and different water carriers.
考查了催化剂用量、反应时间、醇酸物质的量比及带水剂用量对乙酸酯化率的影响。
The effects of catalyst amount, reaction time, molar ratio of sec-butanol and acetic acid, and amount of deaquation reagent on the reaction were studied.
我听说盘子是由锡铅合金制成的，番茄中的高酸物质会使盘子中的铅污染食物，引起中毒。
B - I heard plates were made of pewter and the high acid content of the tomato caused lead from the plate to poison the food.
方法考察硫酸镓用量、醇酸物质的量比、反应时间及催化剂重复使用次数等因素对收率的影响。
Methods the effects of amount of gallium sulfate, molar ratio of alcohol to acid, reaction time and repeated times of catalyst on the yield of n-butyl propionate were investigated.
通过盆栽试验研究了不同腐殖酸物质对土壤有机结合态汞、全汞含量及土壤汞生物有效性的影响。
A pot experiment was conducted to study the effects of different humic acid materials on organic combined mercury and total mercury contents in soil and the biological availability of soil mercury.
不慎接触到汞时，建议服用含有N-乙酰-L-半胱氨酸（NAC）和α-酸的脂肪酸物质，达到解毒目的。
If you’ve been exposed to mercury, consider taking a supplement containing N-acetyl-L-cysteine (NAC) and alpha lipoic acid to aid in detoxification.
这两种被称为“玻璃粉”的氨基酸物质压缩时可以形成蛋白质，并形成用于帮助细胞生成黏膜屏障的化学物质。
These are amino acids, the "beads" that form proteins when strung together, and chemicals needed to allow cells to create a membrane barrier.
考察了催化剂用量、醇酸物质的量比、反应时间、带水剂种类及催化剂重复使用性等因素对产品收率的影响。
Factors affected the yield including the amount of catalyst, reaction time, molar ratio of alcohol to acid, different carrying water agents and times for repeated USES were discussed.
另一种树种的有机凋落物可能不会添加这么多酸，但会添加较多的其他物质。
The organic litter of another tree species might add less acid but more of something else.
橡树的叶子尝起来很臭，因为它们含有丰富的单宁酸，这种化学物质会让很多生物感到不适或难以消化。
The leaves of an oak tree taste foul because they are rich in tannins, a chemical that renders them distasteful or indigestible to many organisms.
脂质过氧化通过硫代巴比妥酸反应性物质方法测量。
Lipid peroxidation was measured by thiobarbituric acid-reactive substances methods.
苯酸苄铵酰胺是世界上最苦的物质。
摩尔先生发现，把遗传物质浸泡在一种叫做冈田酸（一种毒素，贻贝中发现的）的物质中，Ph1染色体可以旋开旋闭。
Mr Moore has found that bathing the genetic material with a substance called okadaic acid (a toxin that occurs in mussels) enables Ph1 to be switched on and off.
这些酸会把铀以及其他物质溶解，使它们从煤灰中过滤出来。
The acids dissolve the uranium, and various other things, leaching them from the ash.
如果说有的话，也只有很少的矿物质、维生素、氨基酸和必须脂肪是不用于提供能量的。
There are few, if any, minerals, vitamins, amino acids and essential fats that are not used in creating energy.
这块陨石从外太空而来。它包含着氨基酸、糖类和其他有机物等构成生命的物质。
It came from outer space. It being the stuff of life-amino acids, sugars and other organic molecules.
如果你进一步的学习了高等化学，那么你可能会知道，碱是指可以给出电子对的物质，而酸则是指可以接收电子对的物质。
If you took more advanced chemistry, you might have learned that bases are substances that can donate electron pairs, and that acids are substances that can accept them.
第五周，对患者使用维生素，氨基酸，草药和矿物质，减少细胞压力，促进正常的突触传递。
In week five, patients receive vitamins, amino acids, herbs and minerals that decrease cell stress and promote normal synaptic transmission.
蛋白质是由特殊的氨基酸组成的物质，它们有助于身体细胞的再生和人体机能的修复。
Proteins are made up of special amino acids, which aid in the overall regenerative and repair functions of the human body.
第一种是肌酸(一种为肌肉提供能量的物质)的衍生物。
The first were derivatives of creatine, a substance that helps to supply energy to muscles.
它提供了含有丰富蛋白质、重要脂肪酸和维生素及矿物质的食物来源。
It offers a source of food that is rich in protein, essential fatty acids and vitamins and minerals.
当分析这些流行的解压饮品原料时，我们发现其中包含着一些用以增加松弛，提高心情指数的矿物质，氨基酸和草药。
When analyzing the ingredients of the most popular stress relief drinks, there are some minerals, amino acids and herbs that have been shown to promote relaxation and enhance mood.
这些都是重要的营养物质，但对于必需脂肪酸，毫无疑问，鱼油应排在首位。
These are important nutrients, but for essential fatty acids, there is no doubt that fish oils are the star.
我们内脏里的细菌会吞噬糖类和脂肪酸一类的物质，它们通过呼吸作用和发酵作用可以分解此类物质。
Bacteria in our gut gobble up things like sugars and fatty acids, which they can break down either through respiration or fermentation. Respiration provides a bigger energy kick.
消费者被一次次的告知，鱼类是安全的，富含健康的瘦蛋白和脂肪酸，但是这些健康物质能够有中毒危险吗？
Time and time again, consumers are told that fish is a safe, healthy source of lean protein and fatty acids, but do the health benefits outweigh the toxin risk?
碱的物质会中和酸。
酸所造成的破坏要弱于碱性物质，因为许多角膜蛋白质可结合酸并起到化学缓冲的作用。
Acids tend to cause less damage than alkalis as many corneal proteins bind acid and act as a chemical buffer.
肉由以下成分组成：蛋白质和氨基酸、矿物质、脂肪和脂肪酸、维生素和其它生物活性成分及少量的碳水化合物。
Meat is composed of protein and amino acids, minerals, fats and fatty acids, vitamins and other bioactive components, and small quantities of carbohydrates.
肉由以下成分组成：蛋白质和氨基酸、矿物质、脂肪和脂肪酸、维生素和其它生物活性成分及少量的碳水化合物。
Meat is composed of protein and amino acids, minerals, fats and fatty acids, vitamins and other bioactive components, and small quantities of carbohydrates.
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