查询词典 acid value

The proportion of oleic acid: the iodine value gives an index of this.

这一工艺去除水的硬度。

The comparison for advantages and application scopes of both methods were carried out. The results show that the former is quicker, but the adding amount of oxalic acid needs to be controled in the range of 1.2-1.7 times of theoretical value and the content of iron in the alloy is required to be below 0.5%. While the later is overelaborate, but it can completely separate magnesium from iron with sharp titration end point.

分析对比了两种方法的适用范围，结果表明，草酸分离稀土方法简便快速，但草酸用量需控制在理论用量的1.2~1.7倍，且合金中铁含量要求小于0.5%；氢氧化铵分离稀土方法分析流程比前者长，但可将主要干扰杂质铁分离完全，终点敏锐。

The element composition, pH value, contents of acid oxygenous groups of carbon black, and their internal relationships have been studied.

本文研究了炭黑的元素组成、pH值、表面酸性含氧基团含量以及它们之间的相互关系。

PGL could effectively degrade the pectic acid in the DCS of Masson pine BCTMP and bleached DIP,resulting in a decrease of about 40 percent in CD value.

PGL可以有效地降解脱墨浆和马尾松漂白化机浆DCS中的果胶酸，DCS的CD值下降了约40%。

Then peracetic acid was employed as oxidant to prepare POSS-epoxide and the epoxy value can be controlled by reaction temperature.

而后，又以过氧乙酸为氧化剂，制备了带有环氧基团的多面体低聚硅倍半氧烷分子，并可通过反应温度控制其环氧值。

Effects of the mass ratio of organic phosphonic acid to zinc biphosphate, compound system amount, corrosion time and temperature, and pH value on the anticorrosive efficiency were investigated.

以四乙烯五胺、甲醛和亚磷酸为原料合成了有机膦酸类缓蚀剂，与磷酸二氢锌复配，考察了有机膦酸类缓蚀剂与磷酸二氢锌质量比、复配体系加量、腐蚀时间、腐蚀温度及体系pH值对复配体系缓蚀效果的影响。

The extraction distribution ratios have been measured as a function of shaking time, counter anion, pH value, picric acid concentration, extractant concentration, diluent and temperature.

利用放射性同位素示踪技术，系统研究了32种开链大环化合物对Am／Eu及Cs／Na的萃取分离行为。

The liquid absorption value and growth of the bacillus was measured after 24, 48 and 72 hour. It was showed that the most effective level of maltose in the medium is 5%. The media with pimelic acid was centrifugated 30min at 10000r/min, room temperature

本研究还将添加5%的麦芽糖的生物素培养基分组，分别加入0、0.2、0.4、0.6、0.8、1.0、1.2、1.4、1.6、1.8、2.0g/L的庚二酸，接种，在37℃，220r/min条件下进行振荡培养，然后测定24、48和72h时菌液的吸收值、pH值、生物素和庚二酸含量，确定庚二酸添加量为1.0g/L时，培养液中的生物素产量最大，庚二酸利用率最高。

Variance in chemical components of the former is similarto the latter;the content of α-cellulose,lignin increase with the growth of age,the content of extract,hemicellucose,polysaccharose and mineral elementsdecrease with the grow of age;pH value is acid and increase with growth.

早园竹的化学成分含量随年龄的变异规律基本类似于毛竹，α-纤维素含量、木质素含量随着年龄增大而增大；抽提物、半纤维素、聚戊糖、灰分含量随着年龄增大而降低；pH值呈酸性，酸性随着年龄增大而减弱。

Fromthe point of view of chemical components,α-cellulose content for differentage-degrees bamboo is mostly the same,slightly increasing with the growth ofage,lignin content increases with the growth of age,the contents of extract,hemicellulose,polysaccharose,mineral elememts decrease with the growth ofage;the result shows the electric conductivity of bamboo is mainly decided bythe content of mineral elements,with the growth of age,volume resistivitybecomes great.pH value shows acid,acidity decreases with the growth of age,this is mainly due to the decrease of fraction of bamboo parenchyma with thegrowth of age.

从化学成分角度来说，不同年龄竹材α-纤维素含量差异不大，一般随着年龄增大而增大；木质素含量随着年龄增大而增大；抽提物、半纤维素、聚戊糖、灰分含量随着年龄增大而降低；研究表明竹材的导电性主要由矿质元素含量大小决定，随着年龄增大，体积电阻率越来越大；pH值呈酸性，酸性随着年龄增大而减弱，这主要由于竹材薄壁组织比量随着年龄增加而减少，内含物如淀粉减少，导致酸性减弱。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。