1·These sections of rocks are dissected, using a laser, into slices a millimeter or less thick.
采用激光将这些小岩石块切分成一毫米或更薄的薄片。
2·It can make fine visual distinctions because it is blessed with one million cones per square millimeter in its retina.
它的视网膜上每平方毫米有一百万个视锥细胞，所以它能分辨出很细微的视觉差别。
3·Nanocrystals, also known as quantum dots, are semiconducting particles with a diameter of a few millionths of a millimeter.
纳米晶体，也被称为量子点，是一种直径只有百万分之一毫米的半导体粒子。
4·If the ground stations tracking the satellites are not accurate to the millimeter, then the satellites cannot be accurate either.
如果跟踪卫星的地面站位置不能精确到毫米，那么卫星也是不可能精确的。
5·They have built robots that can recognize the error of a machine panel by a fraction of a millimeter in a controlled factory environment.
他们已经制造出能够在受控的工厂环境中识别出几分之一毫米误差的机器人。