work without method 不按程序工作

Transumbilical single-hole method without pneumascos 经脐单孔法

method of measurement without contact 非接触量测法

rolling method without pull 无拉力卷耳

without scaffolding method 无脚手架施工法

tracing without ray method 无射线追踪法

powder method without box 不用渗箱的粉末法

with and without comparison method 有无对比法

research method without a structure 无结构研究方法

shrinkage method without sill pillar 无底柱矿房留矿法