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1·The method of determining Ni, Cu and Pbi n urine with isotope dilution mass spectrometry(IDMS)is described.

介绍了采用同位素稀释质谱 法（IDMS）测定 冻干人尿样品中镍、铜、铅的含量。

2·The new method overcomes the limitations of established methods of IDMS in the quantitative analysis of trace gas.

该方法解决了已有同位素稀释质谱法在微量气体定量分析中的难题。

3·In this article, the security and recovery techniques are introduced, which are implemented on a network data base-IDMS.

本文介绍了在网状型数据库idms上实现的安全技术和恢复数据库的过程。

4·Under IDMS, the access to system products is controled by means of a data dictionary, and data access is controled by subscheme, so as to protect IDMS data base accessed from unauthorized users.

IDMS用数据字典控制系统产品的存取，用子模式控制数据的存取，使数据库不被非法用户使用。