Base on the concept of image point diameter, formula was obtained to estimate concentration limit when particle-imaging technique was used for measuring particulate flow.

基于像点直径的概念，推导了颗粒成像法测量颗粒场时的最大极限浓度估算公式。

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Point sample and solvent evaporating integration, seven channels can be automatically sampling, spot diameter less than 3 mm.

点样和溶剂挥干一体化，七通道可同时自动点样，斑点直径小于3毫米。

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This function can make numerical control system according to the point in the X coordinates, as the diameter of the workpiece calculated value spindle speed, and the cutting speed to be constant.

该功能可以使数控系统根据刀尖所处的X坐标值，作为工件的直径值来计算主轴转速，使切削速度保持恒定。

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The tungsten dust contemplated here would be about 30 micro-meters in diameter, and be released at a point 1100 km above the surface of the Earth.

FORBES: Solving the Space Junk Problem -- With More Space Junk?