标准测定

Methanal in air was collect ed using water as absorber,and then determined rapidly and simply by referring standard curve.

用水吸收法采集空气中的甲醛，以吸光度差值△ A与甲醛含量标准曲线对照，快速简便测定微量甲醛。

The method on trans fatty acids analysis in food is very important. The effects of methylate sodium, potassium hydroxide, sulfuric acid and boron trifluoride in methanol and their different concentration and dosage on TFA analysis were studied. The chromatographic condition and the influence of time and temperature on the esterifation of TFA using boron trifluoride in methanol were optimized. A method for analyzing TFA were established by GC based on boron trifluoride in methanol and RT-2560(100m×0.25mm×0.2μm) capillary column.

研究了甲醇钠－甲醇、氢氧化钾－甲醇、浓硫酸－甲醇和三氟化硼－甲醇4种甲酯化试剂的浓度、用量及甲酯化时间和温度对反式脂肪酸检测的影响，优化了色谱条件，建立了以三氟化硼－甲醇法甲酯化，RT-2560(100m×0.25mm×0.2μm)毛细管柱为基础的反式脂肪酸气相色谱检测方法，C18：1-9 t， C18：1-11 t， C18：2-9 t， 12 t和C22：1-13 t 4种反式脂肪酸的最小检出浓度在0.774.08 mg/kg之间。4种反式脂肪酸不同添标浓度回收率为98.44%101.23%，重复测定的相对标准差在0.22%1.31%之间，有较好的准确度和重现性。

Methods:Bacteriostatic ring after both using together is assayed at asepsis condition by microbion s well diffusion means with using Sarcina lutea as bacterial suspension and ampicinin and erythromycin as model drug.

采用微生物井式扩散法，在无菌条件下，用藤黄八叠球菌作菌悬液，氨苄西林、红霉素标准品为模型药物，测定两者合用后的抑菌圈。

It uses ammonium molybdate spectrophotometric method determination of element phosphorus in waste water.

利用钼酸铵分光光度法测定了水样中的元素磷，发现该方法的灵敏度、准确度和稳定性都可以满足分析的要求，并且用元素磷标准样品进行了对比实验，分析误差在10%以内。

The standard solubility product and solubility of compound salt ammonium molybdate· molybdenum trioxide at 0~100 ℃ condition are studied.

研究了难溶复盐钼酸铵氧化钼的标准溶度积常数和不同温度下的溶解度，测定了同离子效应对溶解度的影响，并用红外光谱分析了其解离形式。

Feature and use: It tests melt flow rate of high polymer under mucosity flow state.It was expressed by MFR or MVR.It suits for testing polycarbonate,FI plastic and nylon under higher melt temperature. It suits for testing polyethylene、polystyrene、polypropylene、ABS colophony and polyformaldehyde colophony under lower melt temperature.

特点及用途：熔体流动速率仪是用来测定各种高聚物在粘流状态时的熔体流动速率，在一定的温度和负荷下，熔体每10min通过标准口模的质量或体积，用MFR或MVR来表示，它既适用于熔融温度较高的聚碳酸脂、聚芳砜、氟塑料、尼龙等工程塑料，也适用于聚乙烯、聚苯乙烯、聚丙烯、ABS树脂、聚甲醛树脂等熔融温度较低的塑料测试，广泛应用于塑料生产、塑料制品、石油化工等行业及有关院校、科研单位和商检部门。

Determination of kalium and natrium by Atomic Absorption state and emission state has been discussed in this paper.

本方法讨论了在火焰原子吸收仪上分别于 Atomic Absorption 和 Emission 两种状态，用标准曲线法测定可过滤态钾和钠。

Determination of kalium and natrium by Atomic Absorption state and emission state has been discussed in thispaper.

本方法讨论了在火焰原子吸收仪上分别于AtomicAbsorption和Emission两种状态，用标准曲线法测定可过滤态钾和钠。

The diagnosis of ITP is made clinically by exclusion of other causes of thrombocytopenia, the absence of splenomegaly, and the finding of normal or increased megakaryopoiesis on bone marrow examination. The nonimmune thrombocytopenia is caused by some nonimmune factors, such as acute leukemia, hypersplenism and post-chemotherapic bone marrow suppression.

特发性血小板减少性紫癜的诊断仍只是一种排除性的临床诊断，其国内诊断标准为多次化验检查血小板计数减少，脾脏不增大或仅轻度增大，骨髓检查巨核细胞数增多或正常，有成熟障碍，并且具备以下五点中的任何一点：泼尼松治疗有效，切脾治疗有效，血小板相关抗体增多，血小板相关补体增多，血小板寿命测定缩短，同时应排除继发性血小板减少症。

When selecting the right person for the right job, you should forget about settling old scores and choose from among people who were once against you.

要抛弃个人恩怨来选择人，反对过自己的人也要用。要选定一种测定催化剂表面积的标准方法具有其特有的困难。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。