杂质

The method of inductively coupled plasma-mass spectrometry for determination of impurities of 30 trace rare earth and non-rare earth elements in high purity ytterbium oxide was studied.

报道了高纯氧化钇中30种痕量稀土和非稀土杂质元素的电感耦合等离子体质谱测定方法。

Test results showed that surface impurity was cleaned out and it was found that the zero probability damage-threshold increased 24% and 50% probability damage-threshold increased 19%.

结果发现，石英基片在经过紫外脉冲激光预处理后表面杂质得到有效清除并暴露了低阈值缺陷，处理后的石英基片零几率损伤阈值平均提高24%左右，50%损伤阈值提高约19%。

The method only relates to two raw materials of zinc chloride and ammonia, which can effectively avoid generating impurities in the complicated preparation process.

这种方法只涉及到氯化锌和氨水两种原料，可有效的避免在复杂的制备过程中产生的杂质生成物。

Prior painting, the surface shall be cleaned of oil, moisture, dust ,zinc, salt and other foreign material with thinner, fresh water , wore brush and etc.

在喷漆前，表面应该用稀料，淡水，钢丝刷等清除油，湿气，灰尘，锌，盐和其他杂质等。

During the technology of Zincite produced by direct process from the Zinc Sulfide mineral concentrate in high elevation area,the characteristic of the impurities,distribution was different from that of the technology under usual condition.

根据硫化锌精矿在高原地区用直接法生产氧化锌的工艺中，杂质元素走向与正常状况下不同的特点，文章研究了该工艺的不同操作参数对产品质量的影响。

The ultrafilteration is applied in the separation and concentration of the zymin, it can be operated in the normal temperatures, overcome the effects heat does to the quality of the fermented products, abstract small molecular admixtures, and guarantees filtrates purity and quality; Filtering process does not change, the energy consumption and the cost compared with the traditional method are lower; The equipment running is simple, and is easy to operate and the control, thus it quickly became concentration separation craft the first choice of concentration separation such as biology medicine manufacture.

现在采用超滤技术进行酶制剂的分离浓缩，则可在常温下操作，克服热对发酵产品品质的影响；除去其中的小分子杂质，保证滤液的纯净度和品质的良好性；过滤过程无相变，能耗和成本较传统方法都低；设备运行简便，易于操作和控制，因而很快成为了生物制药等行业分离浓缩工艺的首选。

Because the physical and chemical properties of 5'-Cytidine triphosphate,5'-Cytidine disphosphate and 5'-Cytidine monphosphate are very similar, and thereare many impurities in the solution of zymolysis, the separation of down stream isgreatly difficult.

由于三种磷酸胞苷的理化性质很相近，而且三磷酸胞苷酶转化液中各种杂质含量较多，导致下游分离纯化很困难。

An ordinary process was used, including reaction, filtration, drying and recycling solution and so on, as PTA is easy to separate out in acidiferous conditons while the impurity easy to dissolve at temperature.

根据PTA在酸性条件下易析出而其中所含杂质在高温下易于溶解的原理，采用常规的反应、过滤分离、干燥、母液回收等工序。

Substitutional impurities have changed the local density distribution of adatom and vacancy, which will somewhat influence nucleation and further change the growth model and the atomistic state of the film.

替位杂质改变了表面吸附原子与空位缺陷的区域分布及密度分布，这将一定程度的影响表面原子的成核，进而改变薄膜的生长模式以及薄膜的微观状态。

In this article,we tried get nickel coating iron powder that don't adhibit impurity in experimentation by electroness plating.

本文采用化学镀的方法，在铁粉上包覆镍粉，以实验过程中不引入其它杂质元素为目的，制备镍包铁复合粉末。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。