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.
二氧化钛光触媒已发展了25年，它具有光催化的特性，是一非常出色的环境清净的光触媒。 - quartern circle
四分圆 - quartern
n. 四等分;四分之一;四分之一品脱 返回 quarternate