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- V-fold交叉验证技术v-fold cross-validation technique
- 'fold'在类似'a fiftyfold increase（50倍的增长）'这样的表达中是个构词成分。'fold' is a combing form in expressions like 'a fiftyfold increase'.
- 利用解释激活介质中非线性折射并修正ABCD矩阵的近似,确定了产生自锁模z-fold腔结构Yb:KYW激光器的腔参数的范围.Using a modified ABCD-matrix approach accounting for nonlinear refraction in active medium, we determined the ranges of cavity parameters providing a mode-locking of Yb:KYW-laser in usual z-fold cavity configuration.
