用均匀电阻丝制成直径为d的半圆图如图所示已知oa两点间的电阻为r则bc两点间的电阻为a8πr2b2πr2crd无法计算——青 Sketch Coloring Page

用均匀电阻丝制成直径为d的半圆图如图所示已知oa两点间的电阻为r则bc两点间的电阻为a8πr2b2πr2crd无法计算——青 Template

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tomski用均匀电阻丝制成直径为d的半圆图如图所示已知oa两点间的电阻为r则bc两点间的电阻为a8πr2b2πr2crd无法计算——青 coloring

用均匀电阻丝制成直径为D的半圆图如图所示已知oa两点间的电阻为R则bc两点间的电阻为A8πR/2B2πR/2CRD无法计算——青 sketch template

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