软压光辊
softcalender’s bottom roll
光亮软钢六角冲压螺丝帽
bright mild steel hexagonal pressed nut
激光光压
laser light gradient force
pressure of liht
X射线荧光光光谱
X-ray fluorescence spectrometry
常压软管灌
tube irrigation under the normal pressure
动压软岩复合型巷道
dynamic pressure and soft rock complex roadway