Making use of field experiment, bottomplow is designed and improved.
利用田间试验试制、改进并验证了犁体。
2
Within hours the plankton run out, the feast winds down, and the mantas plow the bay's sandy bottom with their cephalic fins to throw hidden prey back into the water column.
在几个小时内浮游生物的盛宴即将结束，而蝠鲼犁其头鳍于海湾的沙底中，等待下一批猎物的到来。
3
This paper proposes an optimal method for plowbottom moldboard design by taking the power consumption of the objective and the feasible region of the geometric parameters for boundary constraints.