词汇	方便动机
释义	方便动机 convenience motive
随便看	specific gravity factor specific gravity flask specific gravity floater specific gravity fraction specific gravity hydrometer specific-gravity hydrometer specific gravity in air dry specific gravity in green specific gravity in oven dry specific gravity is 5.6-6.0 specific gravity liquid specific gravity measurement specific gravity meter specific gravity method specific gravity of blood specific gravity of crude specific gravity of gas specific gravity of gem Specific gravity of liver specific gravity of pigment specific gravity of sea water specific gravity of separatrion specific gravity of slip specific gravity of soil specific gravity of soil partical