杂质

According to the aforementioned features and basing a new the oretical framework of measurement on ice-thickness and beneath-ice-surface water levels by distinguishing the physical characteristics of air, ice and water, the paper analyzes the laws of the resistance and capacitance of ice with conductive impurity, mixture of ice and water, water and air change as temperature changes, draws conclusions such as ice as a weak conductor, monotonic feature of ice and water, and introduces the design of the structure of a new-type of ice-thickness sensor, its measurement method, and its application in practice.

基于这一特点，笔者提出了利用空气、冰与水的物理特性差异实现对冰层厚度及冰下水位接触式检测的新思路，对含有导电杂质的冰、冰－水混合物、水、空气的电阻、电容特性随温度的变化规律进行了初步分析，并得到冰的弱导电性质和冰与水的电容区间单调特性，据此提出了冰层厚度传感器结构及其冰厚检测原理，介绍了新型冰层厚度传感器在实践中的应用。

The impurity potential and interchain coupling integral have been calculated.

计算了杂质势和链间耦合积分。

Sulfuric acid concentration and impurity iron ions, chloride content on copper coating quality solution will have significant impact, in particular, management should be.

硫酸浓度、杂质铁离子、氯离子的含量差铜层的质量感化较不小，溶液处置答予不入格的鄙薄。

The analytical method of spectrophotometric determination of trace impurities such as calcium + magnesium, iron, sodium chloride, silicon dioxide in deionized water is described in details, with which we have detected the deionized water and has proved that it can meet the need of industrial processing because it is simple,fast and durable.

详细描述了用分光光度计测定去离子水中的微量Ca2++Mg2+，Fe3+，NaCl和SiO2等杂质的分析方法，利用该方法对去离子水进行测定，证明该检测方法简便、快速、实用，能够满足生产需要；通过大量的实验数据，总结出规律，降低了分析频率，减少了生产成本。

Then the iron discharger would automatically clean iron at set-up time.

大幅度地降低浆料所含铁杂质，真正做到浆料抽送过程中自动循环除铁。

In the interface of matrix and iron scale as well as the upper contents of residual element s in steel.

X-射线能谱分析结果表明：在基体与氧化铁皮间的界面富集有铜等低熔点杂质元素，钢中残余元素含量偏高是产生表面裂纹的主要原因。

The mainly use of sulphide iron ore resources is to be fired to sulfuric acid in the past.

过去对硫铁矿资源的利用主要是烧制硫酸，烧渣因含铁低、含硫和其他杂质高而不能被有效利用。

Ivory or yellow flaky solid , no foreign impurity

象牙色或黄色片状固体，无外来杂质

Jasper was green or dark green, sometimes shows a black dirty points, including minerals and other impurities such as chromium spinels due.

碧玉呈绿或暗绿色，有时可见黑色脏点，是含杂质如铬尖晶石矿物等所致。

The trace amount of impurities,namely C5,tert-butyl alcohol,di-secondary butyl ether,methyl ethyl ketone and secondary butyl alcohol,in C4 hydrocarbon from butylene hydration tail gas were analysed by means of gas chromatograph with a column packed with sebaconitrile and polyethylene glycol-20M,and liquid-phase admission valve.

2m×4mm为填充柱，采用液相进样阀液态直接进样的填充柱气相色谱法分析了丁烯水合尾气C4烃中的C5、叔丁醇、二仲丁醚、甲乙酮及仲丁醇等微量杂质的含量。

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％。