This instrument is based on definite weight, independent of fuel density, viscosity, impurities and ambient temperature.

本仪器采用定重量法，不受燃油密度、粘度、杂质含量、环境温度等影响。

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The density, viscosity, refractive index and flash point of glutarate were measured at the same temperature.

通过实验测量同温度下饱和戊二酸酯的密度、粘度、折光率、闪点。

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Physical properties including color, density, viscosity, freezing point, solubility, heat, fluorescence, and optical activity, etc.

物理性质包括颜色、密度、粘度、凝固点、溶解性、发热量、荧光性、旋光性等；

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Light crudes have low wax content, with lower density and API viscosity.

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Heavy crudes (high wax content, high API viscosity, high density) cannot be refined efficiently by refineries geared to refine light crudes and vice versa.

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Sweet light crude oil yields the most gallons of gasoline per barrel of oil and since it has low viscosity and low density, it is comparatively inexpensive to pump, transport, and refine.

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