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The type and the size of epidermis cell, epidermis hair, stomata apparatus and inside blade tissue;Ascertaining by measuring the epidermis cell thickness of the stem, the type and density of the epidermis hair,the density of lenticel; the thickness of cortex, phellogen, vascular tissue and pith;And calculate the ratio of cortex and radius, the ratio of vascular tissue and radius, the ratio of pith and radius…….
测定出叶片表皮细胞、角质层和厚角组织厚度,表皮毛、气孔器和叶内组织的类型、大小等;测定出茎的表皮细胞厚度,表皮毛的类型和密度,皮孔密度,皮层、栓皮层、维管组织和髓的厚度,计算皮层与半径之比,维管组织与半径之比,髓与半径之比等。
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By synthetically analysizing the physical and chemical properties of all components and particle size, the content of F2641 in the JOB-iC is determined by gravimetric analysis after F2641 is seperated from HMX,TATB and PNP through ? alkali reflux. Determination conditions is set as follows the sample is boilingly refluxed for six hour in a constant temperature bath after adding lOOm! 8.0 ?? 0.1% NaOH. The solvent DMF saturated by TATB is used for extracting HMX,F21 and PNP from the sample and TATB is seperated by crucible filter G4. The mass precent of TATB is determined by extraction fractionation. The mass percent of PNP is measured by multiwavlength linear regression ultraviolet spectrophotometry. The testing conditions are set as follows:multiwavlength constitution: X=267nxn, 275nm, 283nm, 29mm, 299nm,the application scope of the Lambert-Beer law: the concentration of PNP is O.005?0.O25mgIml, the concentration of HMX is 0.060.3Omg/ml,absorption coefficents of PNP and HMX are solved by the slope of linear regression curve of absorbency- concentration of standard solution of PNP and HMIX for measuring wavelengthes,on the basis of the Lanibert-Beer law and absorbancy additivity principle, the slope of linear regression curve of A/E(1) and E1 of PNP and HMX solution is regarded as the concentration of PNP in the solution.
根据传爆药中各组分的物理、化学性质及主体炸药的粒度大小,进行综合分析,确定了采用碱回流重量法测定JOB-1C 中F_(2641)的含量,测定条件:加入100ml浓度为8.0±0.1%的氢氧化钠,在恒温水浴中煮沸回流6h;采用溶剂萃取法测定JOB-1C中TATB的含量,选择TATB饱和的二甲基甲酰胺为萃取溶剂,用G4坩埚式过虑器进行萃取分离;采用多波长线性回归紫外分光光度法测定JOB-1C中PNP的含量,通过实验确定了多波长组合:λ=267nm,275nm,283nm,291nm,299nm;朗波—比耳定律的适用范围为PNP浓度:0.005~0.025mg/ml,HMX浓度:0.06~0.30mg/ml;在测定波长下,对PNP、HMX标准溶液的吸光度—浓度进行线性回归,由回归曲线的斜率得出PNP、HMX的吸收系数;根据朗波—比耳定律和吸光度加和性原理,在测定波长下,对PNP、HMX 两组分混合溶液A_i/E_HMX(i与E_PNP(i/E_HMX(i进行线性回归,回归曲线的斜率即为混合溶液中PNP的浓度。
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Methods AH dry powder inhalation was prepared by spray-drying method. Following spray-drying, resultant powders were characterized using scanning electron microscopy and laser diffraction, and the aerosolisation performance was determined using twin-stage liquid impinger. The process conditions were optimized with orthogonal design combined with multi-index test. The powder yield, aerodynamic diameter, angle of repose and respirable fraction were used as indices for orthogonal design.
采用喷雾干燥法制备盐酸氨溴索干粉吸入剂,采用双层液体碰撞器测定盐酸氨溴索干粉吸入剂体外沉积率,扫描电镜观察粉粒的形态,激光粒度测定仪测定粒径大小,以产品收率、粉末的空气动力学径、休止角及体外沉积率为考察指标,通过正交设计结合多指标综合评价法优化最佳制备工艺。
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The positioning of dosimeters will depend on the size of the irradiation container.
辐射量测定器放置的位置将取决于辐射容器的大小。
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Results indicated that leaf length and width were available for estimation of leaf area without leaf area meter, because the leaf shape of taro almost kept constant during the whole periods of plant growth.
结果显示,由於芋叶的叶形在整个生长过程中大致维持固定,故毋须藉由叶面积测定器,利用叶长及叶宽,即可有效地估算出芋之叶面积大小。
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Sizeable:相当大的/大小合适的
sizar /减费生/ | sizeable /相当大的/大小合适的/ | sizer /大小测定器/选别器/
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sized:大小的
sizeable 相当大的 | sized 大小的 | sizer 大小测定器
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sizer:大小测定器
sized 大小的 | sizer 大小测定器 | sizing grid 网格大小