hz: 杭州, sz: 深圳, dl: 大连, fs: 佛山 xm: 厦门, dg: 东莞, gz: 广州, bj: 北京 cd: 成都, sy: 沈阳, jn: 济南, sh: 上海 tj: 天津, qd: 青岛 ...

In light of the problems of large operation resistance and small soil fragmentation during the harvesting operations of existing cassava harvesters, a long- and short-toothed digging shovel was ...

Abstract: Currently, there are still a large number of off-grid areas without electricity in our country. Off-grid wind-solar storage microgrid systems are an effective solution to this social issue.

Centers for Medicare and Medicaid Services Administrator Dr. Mehmet Oz responded to a recent surge in measles cases throughout America, urging Americans in a CNN interview to “take the vaccine, please ...