This was of importance for the further research of surge flow irrigationprinciple.
这对涌流灌溉原理的研究具有重要的参考价值。
2
Friendship always needs with loyalty to sow, with passion to irrigation, with principle to cultivate, with understanding to care.
友谊总需要用忠诚去播种，用热情去灌溉，用原则去培养，用谅解去护理。
3
An automatic topdressing system was designed on the base of the principle of hydrokinetics using energy of static pressure for pipe irrigation and the feature of Venturi pipe in solar greenhouse.