Tài nguyên được gắn thẻ với: East Africa
922 đề mục được tìm thấy (Hiển thị 821 - 830) Trước | Tiếp theo
- 20-06-2016 Chemically healthy soil has a rich base of the nutrients that plants require for growth, primarily nitrogen, potassium and phosphorus as well as elements such as zinc, copper, iron, chlorine, manganese, molybdenum and others, which are needed in small to very small amounts. These nutrients should...
- Abstract, Croton oil was extracted from dry seeds by a mechanical pressing machine then filtered to remove solid impurities. Biodiesel was prepared from the oil through a two-stage process in a biodiesel reactor. The optimum reaction conditions were determined by varying parameters such as...
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- Điều này cũng có sẵn trong:
- Kiswahili (sw)
- English (en)
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- Điều này cũng có sẵn trong:
- English (en)
- Español (es)
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