The students are asked to prove the purity of copper.
要求学生们检验铜纯度。
Probity and purity will command respect everywhere.
为人正派到处受人尊敬。
The white colour is a symbol of purity.
白色是纯征。
She was a woman of purity and goodness.
她是一位纯善良妇女。
White is the symbol of purity.
白是纯征。
The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid.
摘要利用双氰胺和磷酸反应得到高纯度脒基脲磷酸盐P800。
Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality.
本发明获得胡萝卜素晶体纯度高，胡萝卜素油溶品酸价低、质稳定。
Deoxygenate was used to remove the remanent oxygen from gas for supplying the high purity gas.
脱氧剂用于脱除气体中微氧气以提供含氧极微高纯气体。
The purity 99.99% of scandium oxide(Sc 2O 3) was prepared from tungstenic slag with extraction process.
用萃取法从钨矿渣制得纯度为99．99％氧化钪。
The lamp cup is made from Germany-original anodic alumian of high purity, featuring long life and durability.
灯杯采用高纯铝雾面阳极氧化处理，永久耐用。
Ultrafine zircon powder with high purity is a kind of brightening agent in glaze for making high-grade cleaning whiteware.
高纯超细锆英石粉是制造高档卫生具陶瓷所用釉料中乳浊增白剂。
High purity amygdalin was obtained from apricot kernel by the process of enzyme destruction, defatting, solvents extraction and recrystallization.
苦经灭酶、脱脂、萃取、重结晶,制得高纯苦。
Carbon tetrabromide was prepared from acetone and sodium hypobromite by adding tetrabutylammonium bromide.The yield and purity were very satisfactory.
向次溴酸钠溶液中滴加适丙酮,在四丁基溴化铵催化下,高产率得到四溴化碳。
Therefore,it is important to control strictly reaction conditions for removing cystine's mesoisomer and making L-cystine of high optical purity.
严格控制反应条件，分离除去内消旋胱氨酸是制取高光学纯度L-胱氨酸重要措施。
Use in the dark color: standard color is adopted terse white, which possesses qualities of austerity, bluffness and purity.
深色环境中应用：标准色采用简白色，朴素、坦率、纯正是白色特性。
Thus, Gramine was prepared from Indole by condensatallizafion, the purity of Gramine was 98% , and the yield was 95% .
报道了芦竹碱新合成方法,由吲哚与甲醛和二甲胺缩合而制得芦竹碱,经重结晶后其含为98％。
The mixture was refined by sodium sulfide and sodium hydroxide to afford an O,O-diethyl thiophosphoryl chloride at a purity of 99%.
该粗品通过精制工艺改进,采用硫化钠和氢氧化钠混合物进行处理,得到纯度≥99%O,O-二乙基硫代磷酰氯。
Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.
用乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮在相关领域中应用.
High purity titanium sesquioxide was obtained by the reaction of high purity hydrogen and titanium dioxide in the presence of titanium tetrachloride.
用高纯氢和高纯二氧化钛，在四氯化钛存在下，可以得到高纯三氧化二钛。
The results showed that the purity of Zincite as product was more than 99.6%in according with the requirements of grade A products.
试验结果表明,其产品氧化锌纯度可达99.6%以上,符合一级品要求。
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This technique guarantees the purity of the silk.
这种技术能保证丝纯度。
No breath of calumny ever attainted the personal purity of the candidate.
没有诽谤玷污这人个人纯洁。
" Katherine" , coined by the ancient Greeks, it denotes " purity."
" 凯瑟琳" ，源自古希腊，代表纯洁。
The ones with the highest epicatechin content are the ones with the highest cocoa purity.
可可含量越高黑巧克力表儿茶素才越高。
It is also the colour of purity.
白色也是纯洁颜色。
Her purity remains alive inside, I know it.
她纯洁依然存在于内心，我知道。
Foreign relations, like human relationships, ask us to discern the purity of our choices and subsequent actions.
外交关系就像人类关系一样，要求我们辨别我们择和随后行动纯正性。
That resonates with a cultural idolisation of childhood purity.
这种共鸣是源于对童真偶像式崇拜风气。
The flower manages to maintain its purity, untainted by the fact that it emerges from the mud.
这朵花努力保持高洁，出淤泥而不染。
In exchange, Iran will halt nuclear enrichment above five percent in purity.
而伊朗则要保证暂停生产丰度为5%浓缩铀。
That's why her purity meant so much to me.
所她纯洁才会对我那么重要。
Bottled water companies often brag about the purity of their drinks.
瓶装水公司通常会夸耀自家水纯度。
For such weapons, a purity level of about 90 percent is required.
对于核武器而言，丰度要达到大概90%才行。
It will lecture on disinterested purity while its neck is being remorselessly twisted toward a skirt.
这类思考者会一边滔滔不绝于清心寡欲纯洁，而他们脖子却不依不饶地扭向外面短裙。
Poles are perfectly round and pure white, so often represent purity and virginity.
杆子是完美圆形和纯白色，所通常代表纯洁和童贞。
So purity is like an original state which can be lost through contamination.
所纯净好似一种原始状态，可因为被污染而丢失。
However, it is far below the purity needed to make a nuclear weapon.
不过，这个丰度还远低于制造核武器所需丰度。
And we can just, for purity, assume that there's no gravitational interactions.
为了简单起见，假设，没有重力作用。为了简单起见，假设，没有重力作用。
'Well, wait a minute. You know how much I believe in goodness and purity.
“不过，先等一等。你知道我对美德和纯洁有多么笃信。
So, the purity you get with artificial methods may sometimes make for less-sophisticated flavors.
所人造香精就没有那么丰富味道。
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纯度。
征。
稳定。
经灭酶、脱脂、萃取、重结晶,制得高纯苦
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