查询词典 fluorides

The bleaching action of fluorides is slow in the alizarin dye procedure .

在茜素染料法中，氟化物的消色作用较慢。

The results reveal that these two quotas have positive correlation with fluorides resistance and the negative correlation with decreasing rate of blood corpuscle cells.

采用 7个抗氟性不同的桑蚕品种，添氟后，对其血液钙离子浓度以及血细胞数量的变化情况进行测定，发现这两个指标和抗氟性之间都有着极好的正相关关系，而血细胞减少率则呈负相关关系。

Methods The contents of fluorides in water in and around a large size chemical factory were under monitoring. 545 workers and children living in polluted area and 75 villagers living around as control were selected to be measured such indexes as chronic pharyngitis and coryza, urine fluorine, dental fluorosis, secretory immunoglobulin A and the alkaline resistance of skin.

对某大型化工厂厂区及周围水的氟化物含量进行监测，对氟污染区工人和儿童5 45人及周边村民对照组75人进行上呼吸道慢性炎症、尿氟、氟斑釉、SIgA、皮肤碱抗力的调查。

Cryolite, natural and artificial; Conventional test for evaluation of free fluorides content

天然和人造冰晶石。计算游离氟化物含量的常规试验法

The American Dietetic Association strongly reaffirms its endorsement of the appropriate use of systemic and topical fluorides, including water fluoridation, at appropriate levels as an important public health measure throughout the life span.

美国饮食营养协会再次强烈地断言，它认可的适当地外用和内服氟化物，是人一生的重要公众卫生措施。蔬菜和水果降低头颈癌发生的危险

The effect of alkaline metal oxides and fluorides on the performances of green leadless fluxing agents for overglaze colors were studied by means of orthogonal experiments.

应用正交试验法，研究了碱金属氧化物及氟化物对环保型无铅釉上彩熔剂性能的影响。

Gaseous NF3 containing 0.1% or less active fluorides was found to be noncorrosive toward several different parent and welded metal specimen s.

含有0.1%或更少的活泼氟化物的气态NF3被发现对于几种不同的母材和焊接金属试验品是没有腐蚀性的。

Gaseous NF3 containing 0.1% or less active fluorides was found to be noncorrosive toward several different parent and welded metal specimens.

含有0.1%或更少的活泼氟化物的气态NF3被发现对于几种不同的母材和焊接金属试验品是没有腐蚀性的。

This thesis consists of four parts as follows: Part I: ReviewThe purpose of the present review is to summarize the organic chemistry of polyvalent iodine compounds regarded as Chlorides, Fluorides, Oxidize reagents in the field of organic synthesis, especially focus on their synthetic application and space structure, there are lots of reaction examples to illustrate the incomparable merits of organic polyvalent iodine compounds in the synthesis of some drugs and natural products.

本论文由以下四部分组成：第一部分：文献综述本部分比较全面地回顾了有机含碘化合物作为氯化、氟化、氧化试剂在精细有机合成中的应用，主要针对含碘试剂的合成及其结构做了比较详细的综述，并且列举了大量反应实例引证了这种类型试剂在药物及天然产物合成方面具备的优势。

The Change of the soluble fluorides in soil is more obvious than the total fluorides in soil when polluted from outside.

土壤中水溶性氟化物，随外界的氟化物对土壤污染，较土壤中全氟变化明显。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。