hard liner

同根派生

Flux is a liner, including Flux - air-cushion, Flux hard liner, curing Flux liner, and other other is copper liner and Flux - combinations of copper liner.
一类是用焊剂衬垫，包括焊剂?气垫、硬焊剂衬垫、固化焊剂衬垫等；另一类是用铜衬垫及焊剂?铜组合衬垫。
It is hard to sleep without a cooler in this room.
没有空气调节器，在这间屋里很难入睡。
John felt it hard to rig out his family.
约翰感到难以为一家大小置备衣着。
The hard core in the party make all the decisions.
这个党的核心成员决定一切。
Hard copy is computer output on paper, printing or graphics.
硬拷贝是出现在纸上、印刷上或图表上的电脑输出。