查询词典 magnesium

The ocean floor is basalt rock, a mixture of silicon and magnesium.

构成海底的是玄武岩，一种硅和镁的混合物。

Magnesium is going to be used in every application for the company.

镁是要使用的所有应用程序中的公司。

The polymerization rate of benzonitrile catalyzed by Lewis acid and differentmetals was measured, and the activity of metals was in thefollowing decreasing order, magnesium, zinc, sodium, calcium.

发现Lewis酸-金属体系对芳香族腈是一种较好的催化剂，聚合速度比Lewis酸单独催化时有大幅度提高。

Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用"一勺烩"方法，以4-羟基苯甲腈为起始原料，首先与硫氢化钠和无水氯化镁在N，N-二甲基甲酰胺中反应，所得中间体不经分离，直接加入2-氯乙酰乙酸乙酯进行环合反应，得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（2）；然后通过六亚甲基四胺/三氟乙酸进行Duff反应，得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯（3）；再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

In comprehensive utilization of bittern ,it is an important issue to stu dy and develop the magnesium resources in it.

如何更快地研究和开发苦卤中的镁资源，是苦卤化学资源综合利用中的一个重大问题。

The process for the production of white magnesium chloride hexahydrate from bittern in Yuncheng salt lake is studied.

研究了用运城盐湖卤水生产白色六水氯化镁的工艺路线，确定了蒸发终止温度为120~140℃，过氧化氢用量为2 mL，冷却采用自然冷确。

Billy Bitzer was the first cinematographer to employ nighttime photography, a feat he achieved by firing magnesium flares into the night for the split-screen sequence of the sacking of Atlanta.

比利比泽尔是第一摄影师采用夜间摄影，他的壮举所取得镁弹发射到深夜的分割画面序列被解职的亚特兰大。

However, a drug known as Gaviscon , containing magnesium carbonate and alginic acid derived from bladderwrack, has been shown helpful for heartburn in a double-blind trial.

然而，药物称为Gaviscon ，含有碳酸镁和海藻酸来自bladderwrack ，已被证明有助于灼热的双盲试验。

Bladderwrack contains vitamins A, B1, B2, B3, B5, B12, C, D, E and K, and a wealth of minerals including calcium, copper, chlorine, iodine, iron, magnesium, manganese, nitrogen, phosphorus, potassium, sodium and zinc.

Bladderwrack含有维生素A，为b1，b2，B3中，B5，则维生素B12，C类，D，E和K，以及包括钙，铜，氯，碘，铁，镁，锰，氮，磷，钾，钠矿物财富和锌。

The results show that when the test portion weight of the proof gold and samples is reduced to 160.00~200.00mg, there has no influence on the result of gold content. Respectively using magnesium oxide and bone ash cupels, the result deviation of gold content in the samples is within the allowable deviation of the national standards. The result of gold content in samples is much more closed to the theoretical value by adding proper copper in the proof gold. The additive amount of silver (2.5 to 2.7 times equal to the weight of the proof gold) in the proof gold and samples has no influence on the result of gold content.

结果表明，当标准Au与样品的称样量降为160.00~200.00mg时不影响其含Au量的分析结果；分别使用镁砂灰皿和骨灰灰皿，样品含Au量的分析结果与理论含Au量的偏差均在国家标准的允差范围内；标准Au中加入适量的Cu后测得样品的含Au量更接近于其理论含Au量；标准Au与样品中Ag的加入量（2.5~2.7倍Au质量）对样品含Au量分析结果的影响不大。

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。