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bone meal
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bone meal
Encyclopedia
农学
骨粉
释
bone meal
骨粉
骨类脱脂、脱胶或重烧后经粉碎和研磨至通过规定筛号的粉末状磷肥。可作家畜的矿物质饲料成分,质量较差的做肥料。
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initial-value problem
initial value problem in general relativity
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