protoplanetary disk是什么意思

用法例句

Influence of treatment conditions on the reduction behavior, the structure and the catalytic properties of Fe2O3/ZrO2 catalyst has been studied by using TPR, XPS, XRD, Mossbauer spectroscopy and reaction test.

用ＴＰＲ，Ｍｏｓｓｂａｕｅｒ谱法，ＸＰＳ，ＸＲＤ及反应评价等手段研究了Ｆｅ２Ｏ３／ＺｒＯ２催化剂的还原行为、铁物种状态和ＣＯ加氢反应性能。

To develop the RAINBOW piezoelectric actuator with ultra-high displacement, the reduction behavior of PLZT piezoelectric ceramics was researched by experiments.

为研制具有超大位移的RAINBOW压电驱动器,实验研究了制备该器件的PLZT压电陶瓷的高温还原行为。