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3 And 0. 972 4 within the concentration ranges of dichloromethane （ 1 - 10 μg/g） and trichloromethane （1 -10 μg/g）, respectively.

二氯甲烷和三氯甲烷的最低检出限分别为0.027 3μg/g和0.041 0μg/g，加标回收率分别为93.6%～102%和98.1%～103%。

Based on the theory of medium polarization, the dielectric properties of the mixture of oil and water researched, it is found that the best frequency for measuring dielectric constant of the oil-water mixture ranges between 10〓—— 10〓Hz considering medium polarization, EM wave modes, circuit simplification and so on.

本文的主要研究内容和研究成果如下：(1)根据介质极化理论，通过对油水混合介质的介电特性的研究，结合介质极化、电磁波的模式以及简化实现电路等因素，提出了测量油水混合介质介电常数的最佳工作频率在10〓～10〓Hz之间。

Results show that there are different optimum swirls in different ranges of diesel engine operating condition.

试验结果表明，发动机在高、低速区的最佳进气涡流强度是不同的。

The weight values in NLSM were adjusted automatically according to target data, which allowed the measured data with different dimensions or ranges to be treated at the same level, and thus the accuracy and stability of algorithm were improved accordingly. Derivative was replaced by the difference quotient in NLSM which further improved the algorithm speed.

非线性最小二乘法的权值根据目标数据自动调整，使得不同量纲和不同数值范围的观测数据可以在同一水平上进行，提高了计算的精度和稳定性；另一方面用差商近似代替导数加快了算法的收敛速度。

The gm-C filter operates with supply voltage of 1.8V, has cutoff frequency of 1.6MHz to 2.4MHz, dissipates 0.75mW power, and has large differential input signals and wide common-mode voltage ranges of ±0.7V.

此滤波器是操作在1.8V的供应电压下，截止频率可调范围为1.6MHz至2.4MHz之间，功率消耗为0.75mW，并且具有±0.7V的高差动输入讯号及高共模输入电压范围。

Simulation experiments make sure that the dilatometer is able to detect the expansion changes in low temperature. The high temperature reheating process with dilatometer analysis indicate that the firing temperature are little higher than 900℃ for one sample and lower than 900℃ for other five samples with firing temperature ranges of 550~650℃, 650~750℃ and 750~900℃. The results from mineral composition analysis of the samples by X-ray diffraction provide further evidence of the reliability of the thermal expansion measurement.

模拟实验表明，所采用的热膨胀仪能适应低温法测温实验；用热膨胀高温法测出早期陶片中有一块样品原始烧成温度略高于900℃，其余5块样品皆低于900℃；通过热膨胀低温法较为准确地测出这五块样品原始烧成温度是分别介于550~650℃、650~750℃、750~900℃三个范围，而X射线衍射分析结果从物相成分的角度证明了测温结果的可靠性。

The homogenization temperature of melt inclusions in the diopside ranges from 1070 to 1170℃.

透辉石中熔融包裹体均一温度为1070～1170℃，斜长石中熔融包裹体均一温度m≥1100℃。

Range_runs are very space-economical in situations where there are lots of ranges and a few individual disjoint values.

range_run 在有大批间续的值和少量离散值的情况下是非常节省空间的。

The amount of Basic coverage ranges from $5,000 to $50,000, depending on your age at the time of your death or dismemberment.

数额基本覆盖范围从5000元至50000 ，根据您的年龄在的时候，您的死亡或解体。

The contents of polyacrylate sodium as dispersant vary with solid content, and have various optimum content ranges.

以聚丙烯酸钠为分散剂，随粉体固含量的不同，分散剂各有其最佳的用量范围。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。