| 1 | The third part is the Chinese classroom culture's present situation of the middle school in Yushu Minjia; | |
| 2 | Investigation of arsenic content in black soil of Yushu city in Jilin province was carried out, and the affecting factors were analyzed. | |
| 3 | Combining with Yushu city court the building specific design, functional layout, modeling design, etc, we summarized the design characteristics of the court buildings. | |
| 4 | Hgconcentration of black soil in Yushu city of Jilin Province was investigated, and influencing factors were analyzed. |
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