A new squeezing method to assemble helix - type slow - wave structure for twts 用于行波管螺旋慢波组件的挤压新方法
2.
Determination of surface colony count on fitment and utensils in foodareas - part 3 : semiquantitative method with culture media laminated taking up equipment squeeze method 食品行业设备和器皿表面细菌数量测定.第3部分:使用培