It is also shown that: 1-sequentially quotient, compact mapping is 1-sequentially covering mappings.
此外本文还证明了度量空间上的1 -序列商，紧映射是1 -序列覆盖映射。
2
The automatic transmission AM has advantages of high degree of intelligence, good shifting quality, large torque covering range and compact structure, etc.
该变速器具有智能化程度高、换挡品质好、扭矩覆盖面大及结构紧凑等特点。
3
The image if a submesocompact space under a closed and compact-covering mapping is submesocompact.