This paper introduces a newly auto developing X ray film machine.
研究开发出一种新型X—射线透射胶片自动洗片机。
A newly auto-cleaning agent for toilet with surfactant formulation was prepared. Its technology process and conditions, application were studied and its cost was calculated.
利用表面活性剂复配制备了一种新型自动洁厕剂，研究了工艺流程、工艺条件及其应用，并对其进行了成本估算。
A newly rectification auto-cascade refrigeration system is proposed, and its working principle is also analyzed.
提出了一种具有精馏装置的新型自动复叠制冷循环，并从理论角度对其机理给予分析。
A newly rectification auto-cascade refrigeration system is proposed, and its working principle is also analyzed.
提出了一种具有精馏装置的新型自动复叠制冷循环，并从理论角度对其机理给予分析。
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