On comparison between Ma Shi Wen Tong and dividing criterion of word class in modern Chinese language;

There are many Chinese part of speech division standards,After analyzing these standards carefully we find they all have the linguistics theory support,the author carries on the explanation to the dif- ferent linguistics theory,and introduced the establishment in the different linguistics rationale part of speech division standards.

Primary discuss on division standard of grassland pastoral region in China;

Exploration of tunnel length and the converted tunnel length division standard in railway tunnel norms;

Through cases, it summarizes series of stratigraphic division standards which are suitable for the depositional features and electical properties of Xifeng oilfield.

For the comparison of the materials world wide, the differentiating standard for superlarge ore deposits should be simple and convenient.

We found that there are obvious differences existing in some partition criterion of sandstorm intensity adopted by some scholars and in the regulation of visibility observation records in Meteorology Observation Criterion.