蒸馏法

Zinc oxide raw materials and zinc oxide ores, containing high fluorine, chloride and iron, can 't be treated to produces electrowinned zinc by routine process. High-purity zinc using in non-mercury zinc powders is prepared only by using vacuum distillation or rectify process from zinc of the zero grade.

本文针对目前氟、氯、铁等杂质元素高的氧化锌物料、氧化锌矿常规方法难以处理以及无汞合金锌粉用高纯锌必须由0号锌用真空蒸馏或精馏法生产的问题。

During extracting vacuum still bottom and hydrocyclone underflow of H-coal process,coal liquid could be clearly divided into deashed liquidproducts of ash yield less than 0.05% and ash-rich residue with ash yield greater than 60%.

在萃取氢-煤法减压蒸馏釜液或水力旋风分离器底流物时，这些重质物料可分离成灰分在0.05%以下的低灰液体产品和灰分达60%以上的富灰残渣。

Iodimetric titration is a standard method for the determination of sulphur dioxide in food samples.

酸蒸馏碘滴定法是测定一般食物中二氧化硫含量的一个标准检测方法。

A new method of oscillographic titration for the determination of nitrogen content in flour is described The sample was digested with H 2SO 4 Na 2SO 4 CuSO 4 Oscillographic titration is conducted on NH + 4 with Na TPB method,then calculate the nitrogen content Compared with standard methods,this method choose innoxious titrant,has a sharp titration endpoint, needs no distillation absorption and indicator It has the advantages of being easy and quick in operation,and the determination re...

研究了面粉中蛋白质含量的示波滴定法。样品用H2 SO4 Na2 SO4 CuSO4 消化处理，N以NH4 +的形式存在于试液中，用过量四苯硼钠沉淀铵，沉淀过滤，过量的四苯硼钠用氯化四乙基铵标准溶液返滴定，以四苯硼钠切口消失为终点，计算出氮含量，再换算为蛋白质含量。与通用的标准分析方法相比较，本方法所用试剂无毒，终点变化敏锐，不需蒸馏吸收，不外加指示剂，具有操作简便、快速，测定结果准确可靠。

Tritium in urine of tens of the workers in the course of the decommissioning is determinated by distillation and liquid scintillation counter, whose cncentration are 10 2～10 5 Bq/L and whose maximum concentration is 2.7×10 5 Bq/L, which is dose equivalent 0.19 mSv by counted.

用蒸馏和液体闪烁计数法测量了中国工程物理研究院核物理与化学研究所原工作地点核退役过程中直接接触氚和间接接触氚工作人员的尿样，氚浓度为 10 2 ～ 10 5Bq/L ，最大氚浓度为 2 7×10 5Bq/L ，折合剂量当量约为 0 19mSv。

Spritz:Add 10 to 15 drops of essential oil to 8 fl. oz. of distilled water in a spray bottle. Shake thoroughly before using.

喷雾法：滴加10-15滴精油在8盎司蒸馏水中，置于喷瓶中，使用之前充分摇晃。

In this paper ,gray relational analysis was applied to study of the relation between the dry point of petrol in distillation processing under ordinary pressure from Nanchong oil refinery and factors.

用灰色关联法取代传统的数理统计方法，对炼油厂常压蒸馏工段汽油干点值影响因素之间的关系进行研究，确定各影响因子之间的主次关系。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失