求翻译：浇筑水下混凝土之前，再次检测孔底泥浆沉淀厚度，如沉渣厚度大于5cm（嵌岩桩），摩擦桩大于15cm，时，必须对孔内进行二次清孔，确保孔底沉渣厚度符合规定要求。浇筑前，先射水或压气3～5min，将孔底沉渣冲翻搅动。是什么意思？

Before pouring underwater concrete, again testing the thickness of the hole at the end of the mud settling, such as sediment thickness is greater than 5cm (piles), friction piles greater than 15cm, you must clear a second hole on the hole, make sure the hole at the end of sediment thickness line req

Once again, before the next concrete pouring water testing the bottom of the hole mud sediment thickness, such as dregs thickness greater than 5 cm (embedded rock piles, friction piles) greater than 15 cm, and is subject to a 2 holes in the bottom of the hole, to ensure that the winding holes dregs

Constructs in front of the submarine concrete, examines the hole bottom mud precipitation thickness once more, if slime thickness is bigger than 5cm (to inlay crag pile), the friction pile is bigger than 15cm, when, must carry on two unvoiced aspirated consonants holes to the hole in, guarantees the

Pouring underwater concrete before once again test hole-bottom mud sediment thickness, as sediment thickness greater than 5cm (socketed), friction pile 15cm,, must to secondary clearance hole the hole, ensure the hole bottom sediment thickness compliance requirements. Before pouring, water or compre

Before pouring underwater concrete, again testing the thickness of the hole at the end of the mud settling, such as sediment thickness is greater than 5cm (piles), friction piles greater than 15cm, you must clear a second hole on the hole, make sure the hole at the end of sediment thickness line req