return period

The characteristics of mean return period curves of intensity are studied.

研究了烈度的平均重现周期曲线的特征。

As an effectctive device in realizing the cohesion of texts, recurrence refers to the repetitions of certain elements or structures in a language.

作为构成篇章的连接性的一个重要手段 ,重现指的是一种语言成分或结构的重复 。

but this paper focuses on the image of God in Emily Dickinson’s poetry in terms of reproduction, dramatization and personalization of God’s image and analyzes reflections of the poet’s feelings through God’s image.

但是本篇论文主要对上帝形象进行了重现、戏说,并分析了作者的感情。

Primary study of repeatability of COD measurment in wastewater by KMnO_4 method;

高锰酸钾法测定废水中COD重现性初探

Determination of gold in complex ores containing antimong and tungsten by foam plastic method-the selectivity and repeatability of gold separation and concentration by this method;

含钨锑多金属矿中泡沫塑料法测定金—泡塑法分离富集金的选择性及重现性

A method for determination content of Na_2S in sodium sulfide was described with the use of ZnS-precipitation separation-EDTA-complexmetric titration,and the repeatability and accuracy on the method were discussed.

介绍了ZnS沉淀分离EDTA络合滴定法测量工业硫化钠中Na2S含量的原理和方法,并对该方法的准确性和重现性进行了论证。