不可缩伸缩商
Non-decreasable dilatation
无穷小不可缩伸缩商
Infinitesimally non-decreasable dilatation
换气压缩行程
exchange-compression stroke
驱气-压缩行程
scavenging-compression stroke
压缩行程上止点
top center compression stroke
标准行程程序
Standard Air-driven Program
Cu-O键伸缩振动
Cu-O bond stretching vibration