综述了抗抑郁药舍曲林的各种合成方法，并评价了其优缺点。参考文献33篇。
Synthesis methods for new drug Sertraline were reviewed and their advantages and disadvantages were described with 33 references.
林隙形成方式由树木折干形成的最为普遍，占形成木总数58.04％，其次是由于掘根风倒而形成的，占33.48％。
The most popular manner of gap formation in the forest was stem breakage (58.04% of the total), and the second, uprooting (33.48%).
林隙形成木的腐烂等级分布揭示出林隙形成木的形成方式和种类组成均随时间变化。
The decay class distribution of gap-makers indicated that the mode of gap formation and gap-maker species changed with age of the forest;
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