碎石器

A primitive stone mill for grinding corn by hand.

手推的磨碎谷物的原始磨石器。

Objective To compare the effects and complications of epidural anesthesia and combined sinal and epidural anesthesia for transurethral ureteroscope lithotripsy, and to discuss anesthesia methods for URL.

目的：观察比较硬膜外麻醉和腰麻硬膜外联合麻醉两种麻醉方法，用于输尿管镜及气压弹道碎石器行经尿道输尿管镜下碎石术的麻醉效果及并发症，探讨尿道输尿管镜下碎石手术的麻醉方法。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。