查询词典 water content

Water and proton transport together with water content in proton exchange membrane showed significant effects on the performance of PEM fuel cells.

质子交换膜的水含量及水和质子的迁移对PEM燃料电池的性能具有重要影响。

The influences of the type and dosage of the aldehyde, organic acids, as well as the water content in the reaction system on the racemization were examined in detail, and L-Glu was racemized quickly in the presence of 0.2 molar ratio of L-Glu to salicylaldehyde in acetic acid containing 20% water.

详细考察了醛的种类及用量、羧酸溶剂的种类、反应体系的含水量对消旋化的影响，结果表明L-谷氨酸在含20%水的乙酸溶剂中，以水杨醛作为催化剂(水杨醛与L-谷氨酸的物质的量比为0.2)的优化条件下可以快速地被消旋化。

Soil water content, water store and their range of variation increased with the amount of irrigation increasing, and affected soil deep layer.

在灌溉量相同的情况下，随着氮肥施用量的增加，氮素淋失的可能性明显增加。

The water content, dimensional change, mechanical property, high temperature water retentivity and proton conductivity of the membranes were investigated.

制备了聚2-丙烯酰胺－2-甲基丙磺酸质子交换膜并对其进行交联改性，研究了膜的含水率、溶胀率、拉伸强度、高温保水率、质子电导率等性能。

Moreover, self-diffusion coefficient of interlayer water is higher for Na-montmorillonite than that for Na/Mg-montmorillonite at the same water content.

Na／Mg-蒙脱石比相同水含量下的Na-蒙脱石层间水的自扩散系数小。

Calculate the water content, in mg per mL, of the Water Solution taken by the formula

使用以下公式计算标准水溶液中水的含量，单位是mg/ml。

Also, during this process, the water content in vegetation increases and keeps stable gradually, and the water environment in ecosystem will become suavely.

摘 要：本文以南亚热带常绿阔叶林为基本，同时探讨了热带南亚热带森林演替系列中8种生态系统类型的水分结构，发现植被水分结构的恢复与土壤水分结构的恢复是不同步的，50a以上没有受扰动的土壤，其土壤水分结构在时空上才趋于稳定；植被水分结构的时空稳定性基本上与生态系统的演替状况一致；为满足植被蒸腾的需要，植被中水分的月更新次数随着群落向顶极系统的演替而逐渐减少。

The relative soil water content in tilth layer was at 50%~65% and 22.9~49.3 mm water amount of precipitation or supplementary irrigation was needed.

耕层土壤相对含水量在50%~65%，需降水或补充灌溉22.9~49.3 mm的水量。

Soil drying increased the bound water and modulus of bulk elasticity , but decreased the ratio of weight at full turgor: dry weight , osmotic potential at turgor loss point and relative water content at turgor loss point .

3土壤干旱增加了植物细胞的束缚水含量、细胞壁弹性模量系数，降低了水分饱和状态下的重量与叶片干重的比率、细胞发生质壁分离时的渗透势以及此时的细胞相对含水量。

Daily 55% Material Hema-copolymer Water Content 55% Diameter 14.2 mm Base Curve 8.5 mm in 2.50D Power Range -0.50 ~-6.00D in 0.25D steps -6.50 ~-12.00D in 0.50D steps Center Thickness Plano~ 2.50D: 0.130 mm -2.75D~-12.00: 0.110 mm Handling Tint Light Blue Wear Modality Daily Package Blister Features High water retention allows longer moistures.

日抛型（55%的含水量）材料 HEMA共聚物含水量 55%直径 14.2mm 基弧 8.5mm（2.50D）度数范围-0.50 ~-6.00D （步长0.25D）-6.50 ~-12.00D （步长0.50D）中心厚度平光~ 2.50D： 0.130mm -2.75D~-12.00： 0.110mm 处理色彩浅蓝佩戴型日抛型包装吸塑包装特性高锁水能力，长久保湿。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。