查询词典 sample method

A rapid microwave digestion method for the determination of B2O3 in glass sample by mannitol volumetric analysis was studied. The conditions of microwave digestion were chosen.

利用以碱金属氢氧化物作为消解溶剂的微波消解技术对玻璃样品进行快速消解，并采用甘露醇容量法测定其B2O3含量。

However, they have a weak correlation from the sample data results, so this paper made some innovations on the traditional model, and made comparison with the sampling point land price average method.

但从研究区的样本数据计算结果来看，两者之间呈弱相关，所以对传统的模型法进行创新，并与样点地价平均法进行对比验证。

In consideration of endogeneity problems, we use the trivariate probit model which estimate three equations- employment, liver disease and drinking . Finally we used WESML (weighted exogeneous sampling maximum likelihood) method to correct the bias caused by choosing specific sample.

其中，我们考量了肝病与饮酒习惯分别对於就业的内生性问题，并且在trivariate probit模型中使用工具变数来得到一致性的估计结果，最后，我们利用WESML (weighted exogeneous sampling maximum likelihood)的估计方式来修正因为选取某特定样本，所造成估计结果缺乏代表性的问题。

Gather a sour buffer liquid of the sugar adoption lemon to carry on taking out to lift to the sweet dew in the beer leaven, separate many sugar from ferment a liquid, is precipitate with cold methyl alcohol, get a white thick lift a thing, use the 铵 salt and boric acid of the quarter again with many sugar the formation match with a thing, adding ether to precipitate, getting white and refined sample, average each 50 gs the wet leaven cell can get such refined sweet dew to gather the sugar 0.6 gs, computing with the this kind method withdraw of produce a rate for 1.2%.

对啤酒酵母内的甘露聚糖采用柠檬酸缓冲液进行抽提，从发酵液中分离多糖，以冷甲醇沉淀，得白色粗提物，再用季铵盐和硼酸与多糖形成配合物，加乙醇沉淀，得到白色精制样品，平均每50g湿酵母细胞可得到这样的精制甘露聚糖0.6g，计算出以此种方法提取的产率为1.2%。

Based on comprehensive analysis of Taiping coalmine hydrogeological condition and water outlet lithologic characteristics through contrastive analysis of borehole water prospecting drainage and water sample tested data considered that the indirect water filling source of 700 level belt inclined winze may come from Mosuo River According to mine inflow point location and water yield water rich zone in front of roadway checked out by transient electromagnetic method adopted a water control scheme of shallow g .

在综合分析太平煤矿井水文地质条件，出水点岩性特征的基础上，通过钻孔探放，水样化验资料的对比分析，认为该矿+700水平胶带暗斜井的间接充水水源可能来自摩梭河；基于涌水点位置与出水量，以及瞬变电磁法确定的巷道前方富水区域情况，确定了采用浅层注浆法封堵的治水方案。

Objective To determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of Edaravone, by gas chromatography.Methods Sample solution was injected on a GDX column (0.18 mm～0.25 mm) with nitrogen as the carrier gas.The residue was calculated by the external standard method.

摘要］ 目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量方法：采用固定相二乙烯苯乙基乙烯苯型高分子孔小球（直径为0.18 mm～0.25 mm），氮气为载气，用外标法测定乙酰乙酸乙酯中残留丙酮的含量。

Just under this background, studying on the flight mechanism of flapping-wing MAV and sample fabrication from the bionics are conducted in this dissertation. The kinematics equations of insect wings can be acquired by the observation and measurement on the natural insect in researching paper. The geometry model of insect is established by UG technology. The three dimensional grid during the insect moving in the flow field is achieved which adopted grid generation method. The characteristic of lift and drag are attained by simulation the surround flow field during the locomotion of wings, and the flight mechanism of insect is discussed. Based on this study, the physical flapping-wing MAV is fabricated by the acquirable materials and parts of apparatus in existence.

正是在这一背景下，本文从仿生的角度来研究微型飞行器的飞行机理与样机制作；通过查阅文献中对自然界中昆虫翅膀运动的观察与测量，获取了昆虫翅膀的运动方程；采用UG建模技术，建立昆虫的几何模型；采用网格划分方法，获取昆虫在流场运动时的三维网格；运用CFD方法模拟翅膀运动时周围的流场，获取昆虫运动时的升阻力特性，进而来研究昆虫的飞行机理；在此基础上，通过现有可用的材料加工制作仿生微型飞行器。

A HILIC-MS/MS method was developed to determine melamine and its three derivatives, cyanuric acid, ammelide and ammeline in milk and milk powder. The milk sample was directly extracted by acetonitrile with the help of ultrasonic, and milk powder was resolved in water before extraction by acetonitrile.

建立了牛奶和奶粉中三聚氰胺及其3种衍生物（三聚氰酸、三聚氰酸一酰胺、三聚氰酸二酰胺）的亲水色谱－串联质谱检测方法(HILIC-MS/MS)。

The design of heater is important too. Based on the theory of the pyroelectric current method, the sample temperature variety must be symmetrical. Heater is designed with ampullaceous hearth.

加热炉炉体的设计也很关键，针对基于热释电电流法测量热释电系数时对样品温度变化的要求，设计了一款瓶状腔体式加热炉。

The method takes microcrystalline cellulose as affinity column chromatographic medium of Beta-glucosaccharase; under low temperature and anacid condition, the sample of Beta-glucosaccharase is loaded and specifically adsorbed to the microcrystalline column, and then the concentration of NaCl is increased to elute the enzyme, so as to achieve high-efficient and economic separation and purification.

本方法以微晶纤维素作为β-葡萄糖苷酶的亲和柱层析介质，在低温和微酸性条件下，将β-葡萄糖苷酶上样并特异性吸附于微晶纤维素柱，然后再通过增加NaCl浓度的方法将该酶洗脱，从而达到其高效而经济分离纯化的目的。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。