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They showed that the "age pigment" is produced in proportion to the ratio of oxidants to antioxidants, multiplied by the ratio of unsaturated oils to saturated oils.

他们表明，"年龄色素"，是生产的比例的比例氧化剂的抗氧化剂，再乘以比例不饱和油饱和油脂。

This paper mainly studies the effect of pressure, LHSV, temperature and mole ratio of alcohol and alkene on conversion ratio of tertiary amylene.

本文主要考察和研究了反应压力、空速、反应温度、醇烯摩尔比对叔戊烯转化率的影响。

In this paper, through a series of experiments, two series of quaternary-ammounium Gemini surfactants were synthesized, namely the pair alkylene double quaternary ammonium salt surfactant m-s-m·2Br and the pair the alkylene double quaternary ammonium salt surfactant -s-·2Br. We has carried on the attribute with the infrared spectrum to its structure, and to affected the factor which the synthesis pair the alkylene double quaternary ammonium salt surfactant responded to carry on the discussion. We has discovered the synthesis pair the ethylene double quaternary ammonium salt surfactant m-2-m·2Br optimum condition: The bromo alkane and a tetramethyl ethylene diamine mole of ratio is 3.0: 1.0, makes the solvent by the ethyl alcohol, 80℃ under responds for 48 hours in the backflow temperature; Synthesis pair alkylene double quaternary ammonium salt surfactant 12-S-12 ·2Br optimum condition: 12 tertiary amine and 1, 3- propylene dibromide (1, 4- two bromines butane) a mole of ratio is 2.2: 1.0, makes the solvent by the ethyl alcohol, responds for 48 hours in the constant temperature 80 ℃ under backflow.

本文通过一系列的实验，合成了两个系列的Gemini型表面活性剂，即双烷撑双季铵盐表面活性剂m-s-m·2Br和双烷撑双季铵盐表面活性剂-s-·2Br，用红外光谱对其结构进行了表征，并且对影响合成双烷撑双季铵盐表面活性剂反应的因素进行了讨论，找出了合成双乙撑双季铵盐表面活性剂m-2-m·2Br的最佳条件：溴代烷与四甲基乙二胺的摩尔比为3.0：1.0，以乙醇作溶剂，在回流温度80℃下反应48小时；合成双烷撑双季铵盐表面活性剂12-s-12·2Br的最佳条件：十二叔胺与1，3-二溴丙烷(1，4-二溴丁烷)摩尔比为2.2：1.0，以乙醇作溶剂，在恒温80℃下回流反应48小时。

Provision ratio as a result of the different provisions, making use of the percentage of accounts receivable balance of provision for bad debt reserve method of the enterprise, the difference between the use of double provision, many of the standard costs, income taxes, income distribution ratio in the absence of differences in the case of industries in different Allowance for bad debts using the industry method of its tax losses uneven, and the loss of the basis of fair competition.

相同情况下，以"合资"、"独资"企业计提坏账准备金可按应收账款余额的3％计报，有的还更高些。这样相比较，对"合资"、"独资"企业发生潜亏的可能性就比较小，应付市场风险能力就较强，而国有企业显然就处于劣势地位。2。坏除准备金计提混乱，造成资金流失和失控，国家收入减少。

Gross enrollment ratio 总入学率见 gross enrollment ratio gross fixed capital expenditure; gross fixed investment The addition during a period of time - usually a year - to a country's stock of fixed capital without making any allowance for the depreciation of the existing fixed capital.

固定资本支出总额；固定投资总额在一定时期内，一个国家未扣除现存固定资本折旧的固定资本存量增加额。

But ammoniac nitrogen content increased in every organ of cotton with the increase of NH4~ density, and the maximum of ammoniac nitrogen accumulation in each cotton presented in the solution of 75/25 ratio, not in the solution of 100/0 (NH4/NO3~) ratio.

田间条件下，随着氮肥水平的提高，棉田土壤中残留全氮含量和铵态氮含量呈明显增加的趋势。

The effects of the ratio of water and the sample, extracting temperature, extracting time, and the sample particle size on water-soluble active ingredients of Ampelopsis grossedentata were investigated with single factor and orthogonal experiments as a measure of total flavones and water extraction ratio.

以水溶性活性成分总黄酮和水浸提率作为衡量浸提效果的评价指标，分别采用单因素和正交实验L9(34)确定了茶水比、浸提温度、浸提时间和样叶粒度对显齿蛇葡萄总黄酮和水浸提率的影响，得出了影响的主次顺序为茶水比、浸提温度、样叶粒度和浸提时间。

The optimized re action conditions were obtained: the molar ratio of acetic acid and amyl alcohol 1:1.1, the amount of catalyst 0.4g, the reaction temperature about 120℃ and reaction time 3hr, the ratio of...

确定了以该催化剂合成酯的最佳条件：反应温度 12 0℃，酸醇摩尔比为 1∶1.1，催化剂用量为 0 。4 g ，反应时间为 3hr使酸转化率为 86.33%。

The yield of iso amyl propionate was up to 91.8% when molar ratio of isoamyl alcohol to propionic acid was 3.0:1, mass ratio of catalyst was 2.5%, and reaction time was 2.0 hs.

在醇酸物质的量比为3.01，催化剂用量为反应物料总质量的2.5%、反应时2.0h，产品收率可达91.8%。

The angle of every diffraction line of ZSM-5 molecular sieve determinedby X-raydiffraction, we obtained accurate lattice constant by using the least square method, and SiO_2/Al_2O_3 ratio of ZSM-5 molecular sieve according to empirical formula of lattice constant connectedwith SiO_2/Al_2O_3 ratio .

用x射线衍射最小二乘法测定ZSM－5分子筛的晶胞参数，经ZSM－5分子筛硅铝比与晶胞参数关联的经验公式，得到ZSM－5分子筛的硅铝比。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。