短語(yǔ)詞組短語(yǔ)buffer r tube 緩沖管enhanced buffer tube cable 增強(qiáng)型緩沖套管電纜buffer tube sleeve 緩沖管套筒oil buffer tube 油壓緩沖器管thermal buffer tube 熱緩沖管buffer tube qualifying shim 緩沖管限制箍 返回 buffer tube