invertigation meaning in Chinese

研究；检验；调查；分析

Invertigation on the stress state of undergraduates
大学生压力状况的调查研究
Essential oil , fatty acid , flavonoids were isolated from apium l . and pharmacological invertigation concludes that they possesses antibacterial , antioxidative , antitumor , and anti - cardiovascular disease abilities
芹菜主要含有挥发油、脂肪酸和黄酮类等化学成分，具有抗菌杀虫、抗氧化、抗肿瘤及抗心血管疾病等药理活性。
However , the teachers transferred in rural middle school is a serious object . which is vicious cuirculation in rural school teaching . the writer tried his best to conduct invertigation and research to find the effective method to strengthen
随着我国中学教育高峰期的到来，教师的需求剧增，农村中学教师流失严重，且已形成恶性循环。本文试图在通过实践和调查研究的基础上找到加强对农村中学教师管理的办法。