英语语法分析

Preparation of (R, R)-fenoterol and (R, R)- or (R, S)-fenoterol analogues and their use in treating congestive heart failure.

非诺特罗和（R，R）-或（R，S）-非诺特罗类似物的制备及其在治疗充血性心力衰竭中的应用。

AIM: To observe the effect of fenoterol and ipratropium bromide alone or combined in the treatment of childhood acute paroxysm of asthma.

目的：观察非诺特罗、异丙托溴铵单用及联合用药治疗小儿哮喘急性发作的疗效。

A method was developed for the simultaneous determining of Clenbuterol, Salbutamol, Terbutaline and Fenoterol residues in pork tissues using gas chromatography-mass spectrometry(GC-MS).

建立了用气相色谱-质谱同时检测猪肉中克伦特罗、沙丁胺醇、特布它林和非诺特罗残留量的方法。