标准测定

Using the formula supplied with the standard absorption curve, determine the amount of sulphur dioxide in the test solution from the absorbance measured.

用标准消光曲线提供的公式，从测量的吸收率来测定测试溶液中二氧化硫的量。

The apparent activation energy of catalytic reaction is determined to be 59.44 kJ/m...

用于茶叶中锰的测定，回收率均在99%~105%之间，相对标准偏差为2.1%。

Methods In accordance with clinical diagnosis criteria of ALDformulated by the Branch of Adiposis Hepatica and Alcoholic Liver Disease Chinese Society of Hepatology Chinese Medical Association,we selected sixtyfive patient.Then we measured prealbuminin their serum.

选出符合中华医学会肝病学分会脂肪肝和酒精性肝病学组制定的酒精性肝病临床诊断标准的患者65例，测定其血清中的ALT，AST，GGT前白蛋白。

Methods In accordance with clinical diagnosis criteria of ALDformulated by the Branch of Adiposis Hepatica and Alcoholic Liver Disease Chinese Society of Hepatology Chinese Medical Association,we selected sixty?five patient.Then we measured prealbuminin their serum.

选出符合中华医学会肝病学分会脂肪肝和酒精性肝病学组制定的酒精性肝病临床诊断标准的患者65例，测定其血清中的ALT，AST，GGT前白蛋白。

A bioselective membrane electrode sensistive to adrenine has been prepared and made in flow type by means of banana tissue covering an oxygen electrode.

将香蕉组织偶合氧电极研制成肾上腺素生物组织电极，并装制成流通型式。文中对此电极的响应特性进行了研究，探讨了各种实验条件及有关参量的影响。并将电极用于肾上腺素原粉的含量测定，结果与标准方法基本一致

Methods:The minimum inhibitory concentration of the olive polyphenol against the common oral pathogenic bacterium was quantitatively determined with the agar-agar dilution method combined with the micro liquid dilution method.

选用质量控制标准菌株和临床分离的对多数抗生素耐药的菌株，采用琼脂稀释法和微量液体稀释法相结合的药敏实验方法，定量测定橄榄多酚对口腔颌面部感染常见病原菌的最低抑制浓度。

The standard sample of high pure silicon tetrachloride with certified value of 99.99 % was analyzed. The obtained average determination result was 99.857% after normalization treatment. The relative standard deviation was 0.03%.

对认定值为99.99%高纯四氯化硅标准样品分析，归一化法定量，得到该样品中四氯化硅的测定平均值为99.857%，相对标准偏差为0.03%。

It is concluded that the ~(176)Hf/~(177)Hf ratios of 91500, Temora and We-1 were homogeneous, because the aforementioned Hf isotopic results consist of at least seven separated performances of aliquots for each zircon sample. These results have significant implications for zircon Hf isotopic determination by using LA-MC-ICPMS.

上述每个结果包括至少7组独立的锆石样晶的溶解、分离和测定，表明标准样91500、Temora和We-1是Hf同位素组成均一的，可作为LAM-MC-ICPMS(激光剥蚀多接受器电感耦合等离子体质谱)的原位微区锆石~(176)Hf／~(177)Hf比值分析过程中外部校正及监控标准样。

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。

Standard hydration is the test method of determining active magnesium oxide content in magnesium professional standard, but it consumes long time and is hard to guide practical production.

水合法是菱镁行业标准中规定的活性MgO含量测定方法，但标准水合法耗时较长，难以指导实际生产。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。