The observations also show for the first time that a white dwarf can create a cavity around it before blowing up in a Type Ia event.
观测结果还首次显示，白矮星在爆炸成为Ia型超新星之前，会在其周围创造一个空洞。
In this article, the blowing efficiency of spun silk waste is investigated by varying the settingangle of grid bar of six-roller opener type A034 and the improvement of the product is stated.
本文通过生产实践，探索了改变A034六辊筒开绵机尘棒安装角的大小对紬丝开清作用和提高吹净绵质量的影响。
The basic principle, usage of air blowing based level detection, and the structure and application of UCA (h) type nuclear safety class air blowing device are described briefly.
简述吹气法检测液位的基本原理、用途以及UCA (H)系列核安全级吹气装置的结构和应用。
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