查询词典 acid value

With the extension of fertilization with organic , especially with the combination with organic and inorganic fertilizer,the soil readily oxidizable organic matter increased, while Kos decreased ; The soil active humus content, humus acid and E4/ E6 value were increased , while molecular weight and aromaticity of humus acid were decreased , thus progress to humus formation and quality of organic matter were enhanced.

随着有机肥特别是有机无机氮肥配施的年限延长，土壤易氧化有机质的含量逐渐增加， Kos 下降；提高了土壤松结态腐殖质含量，提高胡敏酸的比例；提高胡敏酸的E4/ E6值，降低土壤胡敏酸的分子量及芳构化程度；从而促进土壤腐殖化进程，改善有机质的品质。

It is pointed out that under the condition of the temperature of 1120℃, the reaction time of 16 mm and the carbon content of 27%, the metal transformation rate of sponge iron used for general metallurgy is up to 90%. But the optimal carbon content is 29% for iron sponge to treat DSD acid oxidation wastewater. Under condition of the wastewater's pH value of 3 to 5 and the reaction time of 40min, the removal rates of COD and color are 68% and 90%, respectively. The BOD/COD ratio is up to 0.425 when DSD oxidation acid water is treated with sponge iron.

研究表明：在配碳量27%、反应温度1160℃、反应时间16min的情况下，以铁泥为原料制备的常规海绵铁的金属化率可达90%以上；用于处理DSD酸氧化废水的海绵铁适宜配碳量为29%，用制备出的海绵铁处理DSD酸氧化废水，在pH值3~5、反应时间40min时，出水的COD去除率可达68%、色度的去除率达90%、可生化性指标BOD/COD提高到0.425。

Experimental result showed that under the wavelength of 460 nm,there was good linear relation between absorbency and content of SO42-;and stationary time that absorbency value needed became longer along with the increase of sample quantity of phosphoric acid.When absorbency become stationary,there is good linear relation between the phosphoric acid sample quantity and the content ofSO42-.So the content of SO42- can be adjusted by turning the sample quantity to make it in scope of standard curve.

实验结果表明，在波长为460 nm处，硫酸根含量与吸光度成良好的线性关系；随着磷酸取样量的增加，吸光度达到稳定值所需的时间相应增加，稳定后磷酸取样量与硫酸根含量成良好线性关系，因此实验过程中可通过调整磷酸的取样量来调节硫酸根含量，使之在标准曲线的测定范围内。

The result shows:(1) The value of pH of solution should be adjusted with phosphoric acid and sulphurous acid (1:2) at extracting pectin from apple pomace,and the pectin with the best color and quality was obtained.

研究结果表明：①用本试验所用的果渣提取果胶，应选用H_3PO_4和H_2SO_3混合酸(1：2)作为萃取剂调节溶液的pH值，所得粗果胶无论是产率还是色泽都优于其它酸萃取的效果。

The contents of crude protein and 18 kinds of amino acids in the powder of tetraploidy black locust for fodder leaves at four stages,from which Langfang,Hebei Province,were determined.Their value for feeding were evaluated by means of amino acid scores and essential amino acid index.

测定了廊坊地区饲料型四倍体刺槐叶粉4个不同时期的粗蛋白质含量及18种氨基酸组分，用氨基酸分和必需氨基酸指数对其氨基酸营养进行评价，并结合其生物量对最佳刈割时期进行了分析。

Keywords Wood vinegar;amino acid;pH value;organic acid content;absorbance

木醋液；氨基酸； pH值；有机酸含量；吸光度

This paper analysed the amino acid composition in larval mud crab, Scylla serrata,from zoea I to megalopa, and their diets, rotifer and nauplii of Artemia. An essential amino acid index was employed to evaluate the nutritive value of the protein source in diets.

本文分析测定了锯缘青蟹幼体从刚孵化至大眼幼体各发育阶段及其饵料轮虫和卤虫无节幼体的氨基酸组成，并使用必需氨基酸指数来评价饵料蛋白质的质量。

The oxidation of abietic acid was studied by UV spectrophotometer on the polyethylene film. The effect of antioxidants such as MBP, FMH, DBH, DSB3 and DSB6 on the oxidation of abietic acid was discussed. Antioxidant value was used to determine their antioxidative activities.

采用紫外分光光度分析方法研究了枞酸在聚乙烯膜上的氧化反应，考察了MBP，FMH，DBH，DSB3，DSB65种抗氧剂对枞酸氧化反应的影响，提出了用抗氧化值AO考核抗氧剂的抗氧化能力。

Amino-sulfonic acid single aromatic ring type high range water reducer was synthesized form aminobenzene sulfonic acid, phenol and formaldehyde. The influence of monomers ratio, reaction temperature reaction time, pH value, the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

Amino-sulfonic acid single aromatic ring typehigh range water reducer was synthesized form aminobenzene sulfonic acid,phenol and formaldehyde. The influence of monomers ratio,reaction temperature,reaction time,pH value,the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

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。