He stared at the whorls and lines of her fingertips.他盯着她指尖的涡纹和流纹。Ritter took his left hand and inked the fingertips.里特伸出左手，在指尖上沾上印油。Can you reach your toes with your fingertips?你能用手指尖碰到你的脚趾吗？...
这是从乔的有毛的的祖先那里遗留下来的.This is a hangover from Joe's furry ancestors.其它发现包括有毛的甲壳类 ( 如题图所示 ) 和体长与成年男子手臂相近的虾.Other finds included furry crustaceans ( pictured above ) and lobsters asas a man's arm....
角动量守恒定律,可以用回转器来演示.The law of conservation of angular momentum may be demonstrated with a gyroscope.本文叙述应用回转器的振荡电路的原理与实践.The principle and the practice of an oscillation circuit using a gyrator are discussed.运用回转器—电容模型可以很...