One goal in materials research is to develop new synthetic materials with characteristics that cannot be accomplished by the usual smelting process, as the polymers tend to separate during the heating process. SPEX6770 全自動(dòng)冷凍研磨機(jī) SPEX6870 全自動(dòng)冷凍研磨機(jī) SPEX6970EFM 冷凍研磨機(jī)