本发明涉及一种用于溅镀式镀膜机台的承载台，其包括：一第一载具及一中空的第二载具。
The invention relates to a bearing platform used for a sputtering type coating machine, which comprises a first bearing tool and a hollow second bearing tool.
空分装置中空压机的防喘振控制是压缩工段的关键，防喘振控制的好坏直接关系到空压机设备的安全，因此空压机控制组态十分重要。
Air compressor Surge proof control is key in compress section in ASU, Surge proof control affect the air compressor itself safety, therefor air compressor configuration is important.
为了实现不完全信息的处理，以关系数据库中空值的完全语义为基础，阐述空值的存在对数据库操作的影响，并给出几种处理空值的方法。
Based on the semantics of null values in relational database, the article analyzes the affection of null values when we operate the database.
本文研究关系数据库理论中空值在函数依赖中的语义问题，提出了带标志空值的关系中函数依赖的三种定义。
This paper deals with the semantics of null values in functional dependencies in database theory, and presents three different definitions of FDs in a single relation with marked nulls.
数百万名农民的农场被洗劫一空，他们囊中空空，踏上长途跋 涉的征程，这就是所谓的人口迁移或者边界重定。
Millions of peasants are robbed of their farms and sent trudging along the roads with no more than they can carry: this is called transfer of population or rectification of frontiers.
数百万名农民的农场被洗劫一空，他们囊中空空，踏上长途跋 涉的征程，这就是所谓的人口迁移或者边界重定。
Millions of peasants are robbed of their farms and sent trudging along the roads with no more than they can carry: this is called transfer of population or rectification of frontiers.
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