英语语法分析

There was cis-trans isomerism on the system of SSBR/S/NS and the degree of cis-trans isomerism.

SSBR/S/NS 体系存在顺反异构现象，顺反异构程度也存在。

A rather more complex case is that of steric isomerism.

更复杂的情形是立体异构问题。

Objective: To evaluate the value of MRI in the patients with atrial isomerism.

目的：评价磁共振成像在心房异构中的应用价值。