by BBM Explorer
At present, the Led street light source used in road lighting mainly to high pressure sodium lamp, the light source of the initial luminous efficiency over 100lm / W luminous efficiency of high-power LED devices on the market about 90-100lm / W, slightly lower than the...
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Learn how to use a Run Chart (sometimes called a Control Chart) to help you to measure performance. This is a very simple tool that you can use to search for trends and patterns in your data. Video Rating: / 5 RUN CHART: What is a Run Chart? Video Tutorial This video describes what is a run... https://wp.me/p2Z1Hg-ktm
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