pre-support

英[p'riːsəp'ɔːt] 美[p'riːsəp'ɔːt]
  • 超前支护
  • bias n.偏见;偏爱;斜纹vt.使偏心
  • pretrial adj.审判前的n.事先审理
    1. The advance support of intake and return aircourse needs a lot of plate girders in the comprehensive mechanized coal mining face.
      综采工作面的进回风巷超前支护要用很多板梁。