add in half backet of oil will do...the viscosity of oil is greater than water but the density is smaller. the oil will float on the top and your poo will slowly fall down at the begining since it touches the surface of the water then float or suspend in the water and won't splash... thats fluid mech stuff...
add in half backet of oil will do...the viscosity of oil is greater than water but the density is smaller. the oil will float on the top and your poo will slowly fall down at the begining since it tou ...
fcuking 发表于 2009-9-21 11:45