fuel planar smear density燃料: fuel平面: plane; two dimensions; flat ...有效: effective; valid; efficaciou ...密度: density; thickness有效密度: effective density; smear density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:燃料平面有效密度，即可在微信中查询翻译
