Water is thought to be crucial for life because it provides a medium for nutrients to diffuse into cells and wastes to drift out, and a solvent for critical metabolic reactions.
水被认为对生命是至关重要的,因为水是营养物渗入细胞以及废物排出的媒介,也是关键新陈代谢反应的溶剂。
Methanol is the most effective solvent for graft polymerization.
甲醇是接枝反应最有效的溶剂。
Ethyl acetate saturated with water was the best solvent for crystallization.
最佳结晶溶剂:水饱和乙酸乙酯。
The NHD is a new-style and high-effective solvent for desulfuration and decarbonization.
NHD是一种新型高效脱硫脱碳溶剂,主要成分是聚乙二醇二甲醚。
Furthermore, we discovered the recrystallization solvent for separation of the diastereomer.
发现了分离非对映异构体的重结晶溶剂。
Green solvent for determining the acid value of rosin glyceride by means of titration was studied.
采用中和法测定松香甘油酯的酸值,对溶解松香酯的溶剂进行了绿色化研究。
Greeniz solvent for determining the acid value of rosin glyceride by means of titration was studied.
采用中和法测定松香甘油酯的酸值,对溶解松香酯的溶剂进行了绿色化研究。
High purity methanol is a very important solvent for chemical industry and microelectronic industry.
高纯甲醇是一种重要的化工溶剂。
It was found that both n-hexane and petroleum ether were good solvent for ultrasonic-assisted process.
结果表明,正己烷和石油醚作提取溶剂效果较好。
The selectivity calculated shows that furfurol is an excellent extraction solvent for separating FCC slurry.
计算所得选择性表明糠醛是分离fcc油浆的有效溶剂。
Objective To select an appropriate solvent for extracting total alkaloid from Gouteng (uncaria rhychophylla).
选出提取钩藤总生物碱的适宜溶剂;
The results showed that 75% ethanol was an appropriate solvent for extracting flavones from Panpax notoginseng.
结果表明75%乙醇是浸提田七中黄酮类化合物的较理想溶剂。
The high melting-point paraffin wax was prepared by taking slack wax as feed and MIBK as single solvent for deoiling.
用减三线蜡膏为原料,采用MIBK单一溶剂脱油新技术,进行蜡膏脱油制取高熔点石蜡研究。
The method of extraction by supercritical carbon dioxide is a method of using carbon dioxide as solvent for extracting.
超临界二氧化碳萃取法是使用二氧化碳作为萃取溶剂的方法。
Conclusion The 0. 9% sodium chloride injection was a valid solvent for intramuscular injection of HCG to alleviate pain.
结论采用0.9%氯化钠溶液做溶媒肌内注射hcg,能有效缓解患者疼痛,是一种安全可靠的溶媒。
Our conclusion is that the poorer the solvent for the polymer, the smaller the suitability of the GPC universal calibration.
我们的结论是对聚合物来说,越是不良溶剂,则GPC普适标定的适用性越小。
Extraction of the green pigment The result showed that 80%(V/V) methyl alcohol was the best solvent for the extraction of green pigment.
大蒜绿色素的提取试验首先通过浸提试验筛选最适宜的溶剂及其浓度,确定用80%的甲醇水溶液做浸提溶剂;
Its polarity and electrical conductivity make it an ideal solvent for conducting the chemical reactions that are the basis of metabolism.
水的极性和导电性,使它成为新陈代谢的基本化学反应的理想溶剂。
As diluent in paints and varnishes industries; solvent for metal cleaning and degreasing; textile printing solvent and dry cleaning solvents.
作为油漆及清漆制造用之稀释溶剂;金属清洗及脱脂用之溶剂;纺织印花用溶剂及可作衣物干洗用溶剂。
A kind of emulsifier wax using for young plants transplant was prepared from paraffin wax, water as solvent for dilution, and triethanolamine as emulsifier.
以水作为稀释剂,三乙醇胺等几种表面活性剂为乳化剂,石蜡为原料,制备了幼苗移栽抗旱保活用乳化蜡。
Then conjugated linoleic acids were prepared from fungal oil by alkali isomerization using KOH as catalyst and 2-butoxy ethanol as solvent for the first time.
本文首次以曲霉油作为原料,选用乙二醇单丁醚作为溶剂,KOH作催化剂,碱催化异构化法制备共轭亚油酸。
Methanol is suitable solvent for producing tetrabromobisphenol a, the factor of affecting product quality has: Solution temperature and acidity and fee ding speed of bromine.
甲醇是生产四溴双酚a合适的溶剂,对产品质量有影响的因素有:溶液温度、酸度和加溴速度。
A new process using solvent for separating sodium sulfate and dimethyl isophthalate sodium sulfonate from wastewater of dimethyl isophthalate sodium sulfonate production is introduced.
介绍了用溶剂析出法分离间苯二甲酸二甲酯磺酸钠生产废水中硫酸钠和间苯二甲酸二甲酯磺酸钠的新工艺。
The effects of radiation time, microwave power, volume of solvent for extraction and the volume of solvent for washing cake on extraction yield are discussed in orthogonal experiments.
考察了微波辐射时间、微波功率、溶剂用量、洗涤滤饼的溶剂量对提取率的影响。
The factors affecting the quality of chitin and chitosan fibers were described, including chitin and chitosan quality, solvent for spinning dope and its concentration and coagulation bath.
概述了影响甲壳素和甲壳胺纤维质量的因素,如甲壳素和甲壳胺的品质、纺丝原液的溶剂选择及浓度的确定、凝固浴的确定;
Its major USES are in nitrocellulose lacquers and other resin coatings, as a selective solvent for pharmaceutical products, in plasticizers, and in manufacturing chemically related organics.
它主要用于硝基漆及其他树脂涂料,还用作医药产品的选择性溶剂,并用于增塑剂及制造与化学有关的有机物。
Its major USES are in nitrocellulose lacquers and other resin coatings, as a selective solvent for pharmaceutical products, in plasticizers, and in manufacturing chemically related organics.
它主要用于硝基漆及其他树脂涂料,还用作医药产品的选择性溶剂,并用于增塑剂及制造与化学有关的有机物。
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