There are various teaching forms in TTC Piano teaching, and the four-hand joint playing has its own specific advantages with its own features.
师专钢琴教学形式多种多样，四手联弹是一种比较特殊的形式，并有独特的优越性。
2
Conclusion the health care closely with the fissure, the four-hand operation, short-term operations, in order to achieve a high retention rate of pit and fissure.
结论医护密切配合进行窝沟封闭，四手操作，短时操作，以达到窝沟封闭的高保留率。
3
Methods the doctors and nurses with four-hand operation, the nurse taking equipment, material passed to the doctors to operate on the teeth for cleaning, etching, sealant.