英语语法分析

The results show that the tetrazole ring is approximately planar.

结果表明，标题物的四唑环近似为平面构型；

Theoretical calculations on the tautomerization of five tetrazole derivatives are performed with MNDO MO method.

运用MNDO MO法对五种四唑衍生物的互变异构反应进行了理论计算。

The mechanisms dealing with the thermal decomposition of 5-nitro-1- hydrogen-tetrazole are studied by density function theory.

利用密度泛函理论研究了5-硝基-1-氢-四唑分子热分解的反应机理。