Page setup: margin 2.8cm, bottom 2.5cm, left 3.0cm (binding line 0.5cm), right 2.5cm, footer1.5cm. ?

Cover format setting: font, No.4 song, centered, and the signature of the instructor must be handwritten.

Title: Chinese, bold, third in the center; English, the third time? New? Roman font,? Be bold and centered. There is a blank line (small four) between the title and the abstract.

Extended data:

Precautions:

1, rigorous and standardized, is one of the main characteristics of scientific research papers: data analysis, guard against arrogance and rashness. When judging the data, don't take the object with attribute A, and use B as the reference standard. Units of measurement shall conform to national standards or relevant industry norms.

2. Pay attention to the choice of effective figures. It is not that the more digits after the decimal point, the more accurate it is, but that we should combine the methods and means of obtaining data. For example, if an instrument with an accuracy of 5% is used for observation, the data should be written as 19 instead of 19.2.

3, can't simply copy the instrument reported value. For data above the upper limit of detection or below the lower limit of detection, >: detection limit should be used.

4. The label should be detailed. For example, the sampling location map should have parameters such as scale, orientation, coordinates, legend and description. When using professional symbols and codes to represent objects in diagrams, we should pay attention to the corresponding text descriptions.

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