ponding造句
Standardofponding:pondingnotdeeperthan3mm(thethicknessofHK$5.00coin)ineveryparticular1000mmlengthcanbeaccepted.Thecement-sodiumsilicatebinaryslurryapplicationinpitminespondingconstructionSolvingthepro...
Standardofponding:pondingnotdeeperthan3mm(thethicknessofHK$5.00coin)ineveryparticular1000mmlengthcanbeaccepted.Thecement-sodiumsilicatebinaryslurryapplicationinpitminespondingconstructionSolvingthepro...