论文的主要工作内容包括以下几个方面。
The main work and achievements of this paper are as follows.
项目的主要工作内容包括对国外有关标准和法规的收集、翻译和整理；
The main objective of the project is to collect, view and translate the international currently available relevant laws, regulations and standards;
主要工作内容包括：1。通过对反应条件的优化，成功实现了L1百克级的制备。
The main contents include:1. Ligand L1 was synthesized successfully in hundred gram-scale under the optimized reaction conditions.
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