A new species of the genus Rhopalotettix Hancock (Orthoptera, Tetrigoidea, Metrodoridae) from Taiwan (in English)

This paper describes a new species of Metrodoridae, Rhopalotettix taipeieiisis sp. nov. , collected from (lie (arm of Taiwan University in Taipei, Taiwan, and provides a key to the 6 species of the genus Rhopnloteltix Hancock, 1910. Type specimens are deposited in the Department ol Entomology, Taiwan University, Taipei, Taiwan.

椭球空洞模型的韧性行为

<正> 1.引言为预测材料的韧性破坏,须了解其发生的起因、过程及最终破坏形式.对于韧性金属材料,已查明这与材料中围绕夹杂物所形成的空洞有关.近年来Hancock等以及Beremin研究组做了大量实验观测.结果表明,由空洞的聚合而导致的韧性