短語詞組短語isotope buildup 同位素積累carbon buildup 積碳flux buildup 通量增大froth buildup 泡沫堵塞dirt buildup 臟物堆積samarium buildup 釤形成buildup depth 建成深度faulty buildup 成型不良Equipment Buildup 設(shè)備組成 返回 buildup