About the size of a fist, the extremely light and fluffy dough keeps the fillingpiping hot until you take a bite.
包子一般拳头大小，外边儿面皮蓬蓬松松，咬一口，里面馅儿可烫嘴。
2
On the first filling of the hot water heating system or refilling after maintenance, air in the piping and radiation must be removed and the whole system filled with water.
Numerical simulation analysis is made of the paste piping transportation using FLOTRAN CFD calculation hydrodynamic analysis module in ANSYS software based on the paste filling mechanical parameters.