用量

In the step of hydroxymethylation, gaseous formaldehyde, which was decomposed by paraformaldehyde, was conducted into the reactor. Orthogonal test was designed to investigate the factors of water content in material of PF, reaction temperature, reaction time and consumption of PF on the hydroxymethylation.

在羟甲基化反应中多聚甲醛的进料方式改进为气态进料法，通过正交实验，考察了多聚甲醛原料含水量、反应温度、反应时间、多聚甲醛用量对反应收率的影响。

In this paper,investigation has been made on the process for the synthesis of salicylaldehyde by esterification-oxidation with phenol,paraformaldehyde,boric acid as initial materials.

探索了以苯酚、硼酸和多聚甲醛为原料的酯化氧化法合成水杨醛的工艺路线，根据反应特点，改进了酯化反应方式，采用了多聚甲醛气态解聚法作为羟甲基化反应的进料方式，探讨了羟甲基化反应温度、多聚甲醛原料含水量、催化氧化反应催化剂用量对反应收率的影响并得到最佳反应条件，水杨醛收率为60.5%，纯度达98%以上。

Based on simulation and thorough research of the muti-effect evaporative system, a process of paratactic combination evaporation is added to this system and Genetic Algorithms is used for optimization. In this thesis, Simple Genetic Algorithms and Modified Genetic Algorithms are used to optimize the pressures in evaporators.

在模拟的基础上，通过对齐鲁石化氯碱厂蒸发系统进行深入研究后，本文将并列组合式热泵蒸发工艺应用到该系统中，并运用简单遗传算法和改进的遗传算法对改进后蒸发系统的压力进行了优化，优化的结果显示生蒸汽用量分别减少14.8％和18.5％。

The synthesis of flame retardant for cotton with a new catalytic system ;2. Advances in the catalytic system s for synthesis of terephthalic acid via oxidation of paraxylene

在不同二苯基二甲氧基硅烷用量、聚合温度及聚合时间等条件下，考察DDS对α-烯烃聚合载体型催化体系活性中心的影响。

Conclusion］ Acupuncture can improve the cure effect of sport dysfunction of parkinsonism, and reduce WM dosage.

结论］针灸能提高西药治疗帕金森病运动障碍的疗效，能减少西药用量。

And only a small amount of fluoridated toothpaste, the size of a green pea should be used.

而且每次牙膏的用量限制在一个绿豆大小那么多就可以了。

The increase of catalyst dosage and the rise of reaction temperature result in higher M of PECH.

而增加催化剂用量及提高反应温度，则可增大PECH的相对分子质量。

The yield of PECH reaches more than 95% on the conditions listed below: bisphenol A as initiator, catalyst dosage of 0.05 %,reaction temperature of 128℃.

当以双酚A为引发剂，催化剂用量为生成PECH量的0.05%，反应温度为128℃时，PECH的收率可大于95%，所得PECH的官能度为2~3，PECH的结构由IR、1H NMR及GPC确认。

This paper studied the effect of potassium nutrition on yield and photosynthesis of pellicle melon.

研究了不同钾肥用量对薄皮甜瓜光合作用和产量的影响。

Serious degree of pemphigus is the key of hormone dosis.

天疱疮病情的严重程度是决定激素用量的关键。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。