有一年，为了实现精确分组，德格拉卡在自家客厅地板上把标有学员名字及基本概况的索引卡摊了一地，试验了各种排列组合，最终使所有人员得到了均衡的分配。
One year, to get the study groups just-so, Ms. DeGraca laid out index CARDS with students' names and basic facts on her living room floor, mixing and matching until the groups seem balanced.
拉线轮采用一列式排列，连续拉制，在线退火，机械、电气速度均衡匹配，操作方便，实现快速换模。
Lines using a round-order, drawn in a row, the annealing line, machinery, electrical balance to match the speed, user-friendly, fast-for-mode.
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