wheel center心: the heart体: body; part of the body轮心: core wheel; wheel body; wheel boss; wheel center; wheel centre轮心轴: wheel arbor叶轮心: bead core下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:轮心体，即可在微信中查询翻译
