synthetic ebonite合成: compose; compound; synthetis ...硬: hard; stiff; tough质: nature; character; essence胶: glue; gum硬质胶: ebonite; hard rubber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:合成硬质胶，即可在微信中查询翻译
