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. 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。
3. 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。
4. 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。
5. The process is possible only with certain materials (plastics, resins and metals) and with a precision of around a tenth of a millimeter. 这个过程只能用特定的材料（塑料，树脂和金属），精度在0.1毫米左右。
