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非木质林产品经营认证
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non-timber forest products management certification
非木质林产品经营认证
按照标准和规定的程序,对产自于森林环境下的非木质林产品的生产过程进行评估,以证明其生产经营活动具有森林环境特征,且非木质林产品经营具有可持续性。
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Riemann-Christoffel tensor
Riemann conditions
Riemann conjecture
Riemann connection
Riemann continuation theorem
Riemann crater
Riemann curvature tensor
Riemann curve theorem
Riemann derivative
Riemann differential equation
Riemann ellipsoid
Riemann equations
Riemann existence theorem
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Riemann foliation
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Riemann Hilbert problem
Riemann-Hilbert problem
Riemann homogeneous space
Riemann Hurwitz formula
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