That is, the intention and reason of writing. If meaning and value can be distinguished, discuss them separately; If not, explain together. Generally speaking, it is mainly written from two aspects. First, theoretical significance and value; The second is practical significance and value.

Second, the research summary research

Summary is to sort out the work done by predecessors in the related fields of this topic and the knowledge gaps left behind, with the purpose of determining the reasons for my writing this paper.

Third, the significance and purpose of the research.

Determine the logical starting point of your own research, that is, explain what you will do on the basis of others' research, that is, the reason for writing this paper and the problems to be solved.

Matters needing attention in thesis writing

(1) Numbers with a mantissa of "0" above 5 digits can be rewritten as numbers in thousands and billions. Under normal circumstances, it is not allowed to take ten, hundreds, thousands, hundreds of thousands, millions, tens of millions, billions, billions, billions, etc. As a unit (except for prefixes of hundreds, thousands and trillions). For example, 1 800 000 can be written as1800 000; 142 500 can be written as 142500, but not as142 500; 5000 words can't be written as 5000 words.

(2) Pure decimal, and the "0" used for positioning before the decimal point must be written. The "0" at the end of the significant digits of the numerical value cannot be omitted, and it should be written in full. For example, 1.500,1.750,2.000 can't be written 1.5,1.75,2.

(3) The numerical value is modified according to GB 8 170- 1987 "Rules for Numerical Value Modification", and its concise formula is "4-6 enters 5 to see the right, after 5, there are numbers going up, the mantissa is 0 to see the left, and the left number is odd to enter even and discarded". For example, round to the decimal point 1 bit, 12. 149 round to12.1; 12. 169 was changed to12.2; 12. 150 is about 12.2, 12.250 is about 12.2.