杂质

An investigation is made of the dissolution process of Co, Cu and Fe containing nickel ahoy scraps in sulphuric acid solution by using electrochemical dissolution method.

采用电化学溶解法对含Co、Cu、Fe等杂质的废镍合金在硫酸中的溶解过程进行了研究。

Filter, filter compressed air valve can filter out most of the water and impurities.

二、过滤，过滤减压阀可以过滤掉压缩空气中的大部分水份和杂质。

The albite has a high brightness, low temperature, less impurities and so on.

本钠长石具有白度高，温度低，杂质少等特点。

Electrochemical potentiodynamic polarization, potentiostatic and metallographic techniques were used to study the corrosion behaviour of SUS36 stainless steel in aldol condensation media(70℃).

本文研究SUS36不锈钢，在醛化液中的腐蚀行为及电化学条件、介质中的杂质离子浓度等因素的影响。

Methods: from prepation of crude drug as start, study the technology of extract and defat with L9 (3~4) orthogonal test. With EtOH extraction and water sed, alkali washing, EtOAC extraction as main methods of eliminate dopant. Finally with alky AlzO3 chromatographic column, rich and gain anticancer active site. The maximum response was achieved at a 40 min extracting time with 10 times volume 90% EtOH added to the sample for the first time and 30 min for the second time. Adding 10 times water will produce precipitation; Place the precipitation into 6 times petroleum benzin to de-fat at 60℃.

云南红豆杉中抗癌活性物制备工艺研究方法：利用正交设计试验L9(3~4)确定原料药提取工艺为：10倍量90％乙醇提取两次，第一次40分钟，第二次30分钟；醇提液用10倍量水沉；沉淀加6倍量石油醚40℃脱脂；用1mol／L的NaOH溶液碱洗，除去酸性杂质；以碱性氧化铝柱，以环己烷／丙酮为洗脱溶剂，在环己烷-丙酮(6：4)段富集到所需活性部位，洗脱剂用量为3VB。

There are 8.6%~10.91% foreign matter in the sphenes, in which radioactive elements of strontium, cesium and uranium range from 4.26% to 4.58%. The change of structural cell parameters of sphenes is still very little,Δa=-0.0009 nm~0.0041 nm,Δb=0.0018 nm~0.0004 nm,Δc=0.0002 nm~0.0048 nm,Δβ=-0.10°~0.09° with high crystallinity of 99.27%~96.46%. Though, the age of sphene from the Fenghuang Mountain is about 1000 Ma, and experienced 775 Ma~1758 Ma geological evolvement and alpha decay, its crystallinity only decreased 3%, and its crystal shape and structure are still fine, indicating that sphene is of good ability to solidify radioactive elements. Therefore, sphenes are ideal minerals for solidifying nucleus waste.

通过对北祁连牛心山变质杂岩体中榍石(775Ma)和山西凤凰山花岗岩中榍石(1758Ma)的XRD及EDS等测试与研究，结果表明：两地榍石的杂质元素质量分数高达8.6%~10.91%，放射性核素锶、铯和铀的质量分数达4.26%~4.58%；晶胞参数的变化极小，△a=-0.0009nm~0.0041nm、△b=0.0018nm~0.0004nm、△c=0.0002nm~-0.0048nm、△β=-0.10°~0.09°，结晶度仍高达99.27%~96.46%，榍石经过10×10^8a的地质作用，结晶度仅减少了3%，显示榍石固化放射性系列核素的能力较强，虽经历了约775Ma~1758Ma的复杂地质演化及其所含放射性核素的衰变作用，其晶体结构完好，稳定性极高，是值得期待的理想核废物固化矿物。

Then a detection method of alternating white light and fluorescence imaging was proposed.

为检测皮棉中的杂质，研究了白光成像和紫外激发荧光成像的相互作用关系，提出了白光和荧光交替成像的检测方法。

With the development of science and technology, high-purity aluminum oxide will be in great demand, and higher purification will be required as well. Therefore, it is very urgent to establish a series of analytical method for determining impurities in aluminum oxide.

随着科学技术的发展，高纯氧化铝的需求量愈来愈大，对其纯度的要求也越来越高，因此研究和制定高纯氧化铝中杂质元素的分析方法迫在眉睫。

I took family pictures for the villagers in the day time and developed the films at night with water from the local river, which I purified with alunite. There was no electricity.

我在当地住了十天，白天用身上带的120相机在村子里拍家庭照，晚上用河水冲洗照片，用明矾去掉河水中的杂质。

In this paper, thermal explosion theory is applied to study the thermal safety of ammonium nitrate in aqueous solution, and design a set of detonation temperature test.

摘要硝酸铵在一般情况下是稳定和安全的，但是随着温度的升高以及杂质参与的作用，硝酸铵就会分解放出热量，从而导致燃烧或爆炸。

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％。