Rational and fractional numbers: From quotient fields to recursive understanding
Rational and fractional numbers: From quotient fields to recursive understanding
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有理数和分数：从商域到递归理解
DOI：
10.4324/9780203052624-9
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发表时间：
1993
影响因子：
1.6
通讯作者：
T. Kieren
中科院分区：
文献类型：
--
作者：
T. Kieren
本发明为地毯清扫器的单向可旋转刷子提供了一种更清洁的梳子，其齿是间隔开的平行三角形板，其尖端突出到刷子的刷毛中。
The invention provides, for the unidirectionally rotatable brush of a carpet sweeper, a clearer comb whose teeth are spaced-apart parallel triangular plates having tips that project into the bristles of the brush.