关键

Key words: national economics; stochastic frontier approach; three-time industry; technical efficiency

关键 词：国民经济学；随机前沿方法；三次产业；技术效率

Key words Synchronization fluorescence spectrum technology; Diesel oil; 120 # solvent naphtha

关键 词：同步荧光光谱技术；柴油；120＃溶剂油

Key words: computer room monitor system; snap screen; lock screen; socket

关键 字：：机房监控系统；屏幕截图；锁定屏幕；Socket

Key words: slip line; upper-bound; strip footing; bearing capacity

关键 词：滑移线；上限；条形基础；承载力

KEY WORDS:Roller press, squeeze roller, rolling spindle, the smallest gap

关键 词：辊压机，挤压辊，滚动轴承，最小间隙

Key words : harmony of man ; water and land ; Jianghan Plain ; flood prevention

关键 词：&人-水-地&和谐；江汉平原；防洪

For its implementation in object-oriented languages, its operational semantics and denotational semantics are given.

本文给出了型构兼容的继承的操作语义和指称语义，为其在面向对象程序设计语言中的实现奠定了基础。关键

Key words: environmental science and technology to other subjects; oxytetracycline; leaf-vegetable; high performance liquid chromatography; extraction

关键 词：环境科学技术其他学科；土霉素；叶菜；高效液相色谱；提取

Key words: dispersion;pore water;clay mineral

关键 词：分散性；孔隙水；黏土矿物

"Key words" the principle of democratic centralism, Marx and Engels, Lenin, the Paris Commune

关键 词」民主集中制原则，马克思恩格斯列宁，巴黎公社

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。