indefinite obligation是什么意思

网络释义

用法例句

Effect of Culture Condition on the Kinds and Activities of Degrading Enzyme of Cell Wall;

培养条件对病原物胞壁降解酶种类和活性的影响

Investigation on Kinds of Coccidia and Infection Situation of Chicken;

鸡球虫种类和感染状况探讨

The Kinds and Geographical Distribution of Viviparous Plants in China;

中国胎生植物的种类和地理分布

A classification into kinds and variety departments of Guizhou small leaf Kuding tea and make tea mechanism;

贵州小叶苦丁茶多种类品系分类及其制茶机理

Study on the Kinds and Distribution of Rodents in Plague Natural Foci of Hebei Province;

河北省鼠疫自然疫源地内啮齿动物种类及其分布的调查

An analysis on the kinds of crimes of infringing copyrights in western countries—— Also talking about the perfection of legislation of infringing copyrights in China;

西方主要国家侵犯著作权犯罪种类论析——兼谈我国侵犯著作权犯罪的立法完善

Investigation of Mosquito Species from Three Provinces of Northeast China;

我国东北三省的蚊虫种类调查

Study on species and geographic distribution of small-flowered taxa of Epimedium L. in China;

中国淫羊藿小花类群的种类与地理分布

Species and Geographic Distribution of Large-flowered Taxa of Epimedium in China;

中国淫羊藿大花类群的种类与地理分布

The investigation and study on colourful leaf plant variety and application in Changchun City;

长春市园林常见彩叶植物种类及应用的调查研究

Main Variety of Exotic Weeds in Liangshan and Their Harmfulness;

凉山州主要外来杂草种类及危害

The Variety of Special Tourism and Its Feature;

特种旅游的种类及特点初探

Penile Implants--Types and Current Indications;

阴茎假体的种类及适应证

Type and Utilization of Cultivated Beet;

栽培甜菜的种类及利用价值

The paper introduces the concept and types of environmental hormone,probes the harm to animals and human beings as well as the preventive measures.

该文介绍了环境激素的概念、种类、对动物和人体的危害及其预防对策。