求翻译：钢筋笼和导管安放完毕后、浇筑水下混凝土前，检测桩底沉渣厚度。若沉渣超标，要立即进行第二次清孔，第二次清孔利用导管安装风管，气举反循环法清孔。是什么意思？

Steel cage and the catheter placed after pouring underwater concrete, test pile bottom sediment thickness. If excessive sediment, a second immediately clear hole, the hole using the second clear duct conduit installation, air-lift reverse circulation method Chiang Khong.

rebar cages and catheters placed upon completion, the test before pouring concrete piles under water bottom dregs thickness. dregs exceeds the standards, and if it is necessary to immediately proceed to the first 2 holes and the 2 th Qing Qing Gong use time ducts duct installation, gas lift anti-cyc

After the reinforcing cage and the drive pipe imposition finished, in front of the construction submarine concrete, examination pile bottom slime thickness.If slime exceeding the allowed figure, must carry on the second unvoiced aspirated consonants hole immediately, the second unvoiced aspirated co

Reinforcement cage and catheter placed before completion, pouring underwater concrete, detection of pile bottom sediment thickness. If excessive sediment, take immediate steps for the second time Chiang Khong, Chiang Khong catheter installed air ducts for the second time, air-lift reverse circulatio

Steel cage and the catheter placed after pouring underwater concrete, test pile bottom sediment thickness. If excessive sediment, a second immediately clear hole, the hole using the second clear duct conduit installation, air-lift reverse circulation method Chiang Khong.