查询词典 barium

In order to modify the deviation angle of ultraviolet polarizing prism of iceland crystal and barium fluoride, a new design was given by changing the structure angle of the iceland crystal.

为了修正紫外偏光镜透射光束偏离角，提出了一种新的设计思路，通过改变冰洲石一端的结构角来实现透射光束无偏离。

Barium arsenate was proposed as being an extremely insoluble arsenate, but this was shown to be incorrect.

钡被作为极其难以解决的砷酸盐，但是这被显示是错误的。

Sol-gel Autoignition Synthesis, simple, self-cleaning and easy to undertake scale production, is the one of the prospective routes for manufacturing barium titanate powders.BaTiO3 nanopowders with the particle size 20-90nm, specific surface area 15m2/g, fine particle distribution, ratio of Ba/Ti 1.002 and with the dielectric constant more than 3000, were synthesized by SAS BaTiO3-TiCl4-ammonia-citric acid system.

本文自己组装的溶胶凝胶自燃合成系统，利用对Ba(NO_3)_2-TiCl_4-柠檬酸-氨水体系进行自燃合成研究，制备了具有纳米尺度的近球形BaTiO_3颗粒，粒径介于20-90nm之间，比表面积15m~2／g，分布范围较窄，Ba／Ti为1.002，器件介电常数最高达3000多。

BARIUM AZIDE, dry or wetted withless than 50% water, by mass

叠氮化钡，干的或湿的，按重量含水低于

BARIUM AZIDE, WETTED with notless than 50% water, by mass

叠氮化钡，湿的，按重量含水不低于

Excellent barite ore containing Barium sulphate,≥90% even above 96%.

优良的重晶石矿石含硫酸钡≥90%，甚至达到96%以上。

Barite is a kind of natural compounds, main component is Barium sulphate, BaSO4 formula.

重晶石是一种天然的化合物，主要成分是硫酸钡，分子式BaSO4。

The production method of industrial barium carbonate was introduced.

阐述了工业碳酸钡的生产方法。

Recent advances in preparation of barium carbonate particles were reviewed.

综述了碳酸钡粒子制备方面的进展。

Preparation and characterization of fine barium carbonate particles.

我国碳酸钡的市场现状和发展方向。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。