bn source氮化: nitrating; nitration; nitrid ...硼: boron扩散: spread; diffuse; proliferate ...源: source; fountainhead硼扩散: boron diffusion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:氮化硼扩散源，即可在微信中查询翻译
