salt-less and less-salt preservation
heavy loading and over loading
3-parallel bunker bell-less top
Abnormal high soil temperature with less rainfall
affection less character
air cylinder with rod-less piston
air oil-less compressor
approximate equal or less than
激光诱导的周期性表面结构(LIPSS)
近似小于等于
ash-less and phosphorous-free
be less than or equal to
bearing-less switched reluctance motor(BSRM)
bell less blast furnace