4 picking up the tiles, applying 1 : 2 cement paste or 1 : 0.15 cement and lime cream onto the binding surface of the tiles, then constructing onto the floor 时,宜用1:2水泥浆或1:0.15水泥石灰膏浆均匀抹于铺贴面,再用均匀力铺在地面之
deep convulsions, combined with the pressure of radiation and other forces, heave the distended and loosely bound surface layers outward into space, creating a planetary nebula 深层的扰动,结合辐射压与其他作用力,将胀大而松散的表层高高举起,向外抛入太空中,创造出行星状星云。