reduced pressure controller 减压节制器 reduced pressure method 减压法 reduced pressure vapor phase epitaxial growth system 减压汽相磊晶生长体系 ..
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The advantage and disadvantage of the five recycling methods, direct heating, direct aqueous vapor, indirect aqueous vapor, reduced pressure distillation, precipitation method, is discussed.
探讨了直接加热法、直接水蒸汽法、间接水蒸汽法、减压蒸馏、酒精沉淀等五种回收方法的优缺点。
The article explores the method of inspecting gas content in the aluminum alloy and elaborates the inspection procedure of the sample solidifying under reduced pressure.
探讨了铝合金中含氢量的检测方法和理论基础，并着重叙述了减压凝固试样法的检测步骤。
Supported phosphorized molybdenum catalyst precursor was prepared by the sol-gel method, and reduced under atmospheric pressure by hydrogen nitrogen mixture for the first time.
提出了磷化钼常压制备工艺，包括溶胶-凝胶法制备负载型磷化钼催化剂前体及在常压下以氢氮混合气为还原剂的催化剂前体还原。
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