查询词典 acid ratio

The increase of distribution ratio may be conduced by the nonpolar group in branch chain of amino acid.

氨基酸的支链结构中含有非极性基团将导致其分配系数的增加。

The research indicated that the variation of rain acidity,acid rain frequency and the equivalent concentration ratio of the chief anion ions to positive ones all presented conspicuous ascending trend,the chemical component of the rain was primarily influenced by the acidic gas and marine...

研究表明，深圳市降水酸性、酸雨频率以及酸碱离子当量浓度比值都呈显著的上升趋势，降水的化学成分主要受到社会经济活动产生的酸性气体以及海盐成分的影响，深圳及珠三角地区二氧化硫和氮氧化物排放量的增加是酸雨日益严重的重要原因。

Objective To establish ratio spectrophotometry for determination of chloramphenicol and salicylic acid in tincture.

目的 建立氯柳酊中氯霉素和水杨酸的比值光谱测定法。

Effects of ratio of p chlorophenol to 2 chloroacetic acid,reaction temperature,reaction time and pH value on the reaction were studied.

对原料配比、反应温度、反应时间和溶液pH值等各种反应条件的影响作了详细研究。

When the molar ratio of 2 chloroacetic acid∶ p chlorophenol is 1.25 and pH=5～7 at 104 ℃ reaction for 20 min in the 20% NaOH solation,the yield of PCPA can be reached 90%.

氯乙酸∶对氯苯酚为 1 2 5 ，质量分数为 0 2的氢氧化钠溶液中，pH值在 5～ 7之间，温度在 10 4℃左右为宜，反应时间为 2 0min ，PCPA收率为 90 3%。

Shown by GL-03 culture in vitro test, the ferment cultured milk has strong acid and cholate resistant ability, good adhesive, obvious inhibit to common pathogenic entero becteria, without drug tolerance factors, is a lactobacillus applicable to permanent planting of human body intestinal tract, and simultaneously the deterioration ratio of the cholesterol in vitro can be up to 56 percent; proved by the animal-test, the cholesterol-lowering cultured milk has the function of lowering serum cholesterol.

乳酸菌GL-03体外培养试验表明其有很强的耐酸、耐胆盐能力，粘附性好，对常见的肠道致病菌有明显的抑制作用，不携带耐药性因子，是一种适宜于人体肠道定植的乳酸菌，同时体外胆固醇降解率可达56％。动物试验证明降胆固醇酸乳具有降低血清胆固醇的功能。

When the sodium lauryl sulfate and p-octyl polyethylene glycol phenyl ether is used and its level in 3% and 6: 4 ratio, the polymerization process has the lowest coagulum and the highest monomer conversion. Higher reaction temperature and more level hydroxyl value lead to more coagulum, the latter also lead to larger particle size. The acid value has larger influence on viscosity and coagulum, there exist a best range. The emulsion particle size is larger for its hydrophilicity, most of its particles are connected together.

在含较高亲水单体的乳液聚合体系中，难以制得稳定的预乳化液，不能采用工业生产中常用的预乳化工艺，而只能采用混合单体直接滴加的方法；由于单体混合物的亲水亲油值较高，用阴离子型乳化剂十二烷基硫酸钠和非离子型乳化剂聚乙二醇辛基苯基醚混合，用量为单体总量的3％，且比例在6：4时，乳液聚合时具有最低的凝聚物含量和最高的单体转化率；乳液聚合反应温度升高，可以提高单体转化率，增加反应速度，但凝聚率相应提高；随着羟基单体含量的增加，聚合过程中凝聚率增加，聚合物乳胶粒平均直径增加；羧基单体有一个最佳的用量（2.6％），过高或过低凝聚率均提高；羧基含量对乳液的粘度有较大的影响，当羧基含量较低时，羧基含量增加，乳液粘度增加明显；含羟基乳液粒子由于含亲水基团较多，使得乳胶粒径增大，乳胶粒子大多数互相凝聚在一起，处于凝聚态。

The influence of reaction time,dosage of catalyst and molar ratio of cyclohexanol/acid were investigated in the presence of copper sulfate used as catalyst.

在较优催化剂CuSO4.5H2O催化下，考察了反应时间、催化剂用量、醇酸比等因素对酯化率的影响。

The effects of the molar ratio of potassium bromide to cyclohexanol, the amount of water and concentrated sulfuric acid, and reaction time on the yield was investigated.

考察了溴化钾与环己醇摩尔比、水用量、浓硫酸用量、反应时间对产率的影响。

Effects of some major factors on deoxidize rate of silver, such as Mix ratio connection of tartaric acid and glucose, over all concentration of mixed liquid, the pH level, the reaction temperature, the reaction time etc.

考察了酒石酸与葡萄糖的配比关系、还原混合液的总浓度、pH值、反应温度、反应时间对银还原率的影响，得出了酒石酸与葡萄糖、无水乙醇的质量比为1：2.6：1，pH值为12，在室温下放置时间为3-5d，银的还原率大于92.7%的最佳条件，总回收的金属银纯度为98.2%。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。