查询词典 sulfite

However, it often is necessary to use small chlorinator pumps or special filters with oxidizing media in front of the mechanical filters to oxidize the iron or sulfite quickly.

但是，往往需要使用氧化在机械过滤器前媒体氧化亚硫酸盐的快速铁或小加氯泵或特殊的过滤器。

The method depends on the formation of a sulfite addition product which is hydrolyzed to yield the pure citral.

该方法取决于亚硫酸盐加成物的形成，然后将其水解以产生纯的柠檬醛。

Calcium Sulfite - The use of high temperature resistant material, with high-performance features of dechlorination.

亚硫酸钙：采用耐高温特殊材质，高效能除氯功能，用好水更有保障。

Deliquescence of calcium sulfite under various conditions including temperature,pH,dissolving time,stirring rate and initial quantity was investigated in experiment.

亚硫酸钙的溶解浓度对氧化速率有非常重要的影响，课题主要研究CaSO3的溶解特性，描述了CaSO3在不同条件下(温度、pH、溶解时间T、搅拌速度、初始加入量等)溶解量的变化规律，进而找出CaSO3的最佳溶解条件，以达到提高氧化速率及石膏的生成率，防止堵塞和结垢的目的。

MATERIALS AND METHODS: The root tips of Vicia faba were treated with different concentrations of sodium sulfite and sodium nitrite (in the concentrations of 25;50;100;200;400 mg/L) with distilled water as control for four hours.The root tips of Vicia faba were stained with carbol fuchsin and examined. The micronucleus rate and the rate of chromosome aberration were determined within root tip cells of Vicia faba.

材料与方法：用不同浓度的亚硫酸钠和亚硝酸钠(25、50、100、 200、400 mg/L)分别处理蚕豆根尖4 h，并以蒸馏水作为对照，用石炭酸品红染液染色，分别观察、测定蚕豆根尖细胞的微核率和染色体畸变率。

Technical characteristics and existing problems of cyanide-free silver plating technology were summarized through the analysis of cyanide-free silver plating systems of thiosulfate,succinimide,iodide,hydantoin,sulfite and others.

通过对硫代硫酸盐、丁二酰亚胺、碘化物、乙内酰脲、亚硫酸盐以及其它无氰镀银体系的分析，总结了当前无氰镀银工艺的技术特点及存在的问题，并阐述了无氰镀银技术的发展历程和研究现状。

The hygienics indexes were compared between individual workshops and manufactories, including physics and chemistry, pesticides, plant growth regulaors, food additives, pathogenic microorganisms and sulfite contents （on the basis of SO2 , the same below）, and so on.

方法通过卫生学调研，对比分析工厂生产豆芽和小作坊孵化豆芽的理化、农药残留、植物生长调节剂、食品添加剂、致病微生物及亚硫酸盐（以SO2计、下同）等多项指标。

This method has been applied to the determination of sulfite in waste water samples. The results are consistent with those obtained by iodometry.

该法用于废水中亚硫酸盐的测定，所得结果与碘量法测得的结果相符。

The study results revealed that the effect of alkaline sulfite pretreatment on kenaf core lignin is more significant,it is believed a better pretreatment process to CMP.

研究认为，在本实验条件下，AS预处理对红麻秆芯的性质有显著的作用，是制备化学机械浆较好的预处理方法；而AP预处理，对红麻秆芯的作用程度较弱。

The sulfite oxidation workshop section can be left out and the process can be simplified.

和过氧化氢和Fe-EDTA法相比，本方法脱NO的效果具有持续时间长、效率高等优点。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。