管型：这可能是一个，两个或三个字母，数字或符号。
TUBE TYPE: This may be one, two, or three alphanumerics or symbols.
本文探讨了数字城市空间管治信息质量体系。
This paper discussed the information quality System for the space governance in digital city.
可以实现两个数码管通过摁键来现实数字的功能。
Can be achieved by two digital press function key to real Numbers.
可以实现两个数码管通过摁键来现实数字的功能。
Can be achieved by two digital press function key to real Numbers.
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