The acceptation of the word zui(嘴) has gone through an evolutive course, in which it refers to birds’mouth wholly at the beginning, then insects’ and at last it refers to animals’ mouth and human beings’ mouth.
“嘴”的词义经历了由最初专指鸟类,到用于虫类,再到指称动物和人的演变过程;隐性义显现化,与“口”连用和字形影响是其演变的原因;“嘴”“口”真正竞争始于元末明初,到清末,单用时“嘴”已基本完成对“口”的替换,但由“口”组成的复合词还大量使用。
This paper analyses the main performance characteristics of some troubles in detail,such as air leak of cutting nozzle,"raiding" of cutting torch and so on,studies the key reasons for these troubles and finds out the solutions.
详细分析了割嘴漏气以及割炬"不冲"等故障的主要表现特征,研究了这些故障产生的关键原因,并给出了相应排除方法。