楼梯踏步三角定线板pitchcirclediameter: 电极圆直径pitchblendes: 沥青铀矿pitchcoke: 沥青焦pitchblende group: 沥青铀矿类矿物pitchdown: 下俯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:pitchboard，即可在微信中查询翻译
