查询词典 barium

In the light of long years production experience of photographic paper ,this article presents a concise summary of main technical problems concerning the preparation of barium sulfate paste.

本文结合多年生产照相纸的经验，简明地阐述了有关制备硫酸钡浆液的主要技术问题。

Keywords polyamide 66;barium sulfate;composite;structure;mechanical property

聚酰胺66；硫酸钡；复合材料；形态结构；力学性能

The effects of the surface treatment methods, particle size and volume content of barium sulfate on the performances of PTFE sealing materials were investigated, and the mechanism of the modification was also discussed.

实验研究了硫酸钡表面处理方法、颗粒粒径及其体积含量对材料性能的影响，并对改性机理进行了分析。

The determination of sulfur in thiolated chitosan resins with barium sulfate nephelometery was developed.

研究硫酸钡浊度法测定硫代壳聚糖树脂含硫量的方法。

The barium sulfate must be a lump-free powder.

硫酸钡必须是无块的粉末。

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％。