过泸法配制试样 preparation of sample: 样品的制备; 样品制备preparation sample: 备样sample preparation: 试样制备; 试样准备; 样品处理; 样品加工; 样品制备coal sample of preparation: 煤样制备coal sample preparation: 煤样设备下载手机词典可随时随地查词查翻译