C60机制砂混凝土
C60 concrete with machine-made sand
花岗岩机制砂
machine made granite sand
机制砂混凝土
concrete with manufactured sand
manufactured sand concrete
控砂机制
controlling mechanism on sandbody
远距离泵送机制砂混凝土
Long distance pump-delivering concrete mixed with machine- processed sand
砂粒之移动机制
The mechanism of sand movement
砂质海岸侵蚀机制
sandy coast erosion mechanism
TCP友好控制机制
TFRC TCP-friendly rate control