quarternate
常见例句
- The titania photocatalysts have been research quartern century. It has characteristic of photocatalysis which is excellent performance of environmetal cleanup.
二氧化鈦光觸媒已發展了25年，它具有光催化的特性，是一非常出色的環境清淨的光觸媒。 - quartern circle
四分圓 - quartern
n. 四等分;四分之一;四分之一品脫 返回 quarternate