by Sirius Fourside If you’ve ever tried to learn how to grow cannabis online or via cannabis growing forums, you’ve probably seen a lot of abbreviations thrown around. LST, TDS, par, EC, HPS…there are just too many! One that you’ve probably seen by now is “ppm”. If you’re...
What does ppm or ppb mean? 来自 farmlandbirds.net 喜欢 0 阅读量: 44 作者: BZ Satterfield 摘要: odor number, pH index, corro- sive index number, and, for radionuclides, the units pCi/L [picocuries per liter] and mil- lirems per year are used.Pronounced py-coe-cure-ee, pCi/L is ...
This unit of measure is named for the French physicist Marie Curie, who was a pioneer in the research of radioactive elements and their decay. One pCi is equal to the decay of about two radioactive atoms per minute.Because the level of radioac- tivity is directly related to the number ...
Ppm is mentioned in many user manual specifications sections of appliances, gadgets, and materials. Why should this be? Why not use percent (%) or even decimal fractions? Ppm is important for accuracy and safety reasons and is explained here along with c
What is PPM? PPM stands for Planned Preventative Maintenance, more commonly referred to as simply planned maintenance or scheduled maintenance. It is a proactive approach to maintenance that ensures all your upcoming works, including Fire Risk Assessments, seasonal upkeep, and safety checks, are sched...
Whereas the VU meter has fairly equal attack and release times, the PPM is characterised by having a very slow fall-back time, taking over 1.5 seconds to fall back 20dB (the specifications vary slightly for Type I and II meters). The reasoning for the slow fall-back was to reduce eye-...
This is because manufacturers measure the maximum PPM in the fastest printing mode, a.k.a. "economy mode," which is also the lowest quality. When printing in regular mode, the speed may be twice as slow. When printing in fine or high-quality mode, the speed will likely be reduced even...
a长城是秦始皇的时候用来抵抗匈奴的。 The Great Wall is Chin Shihhuang's time uses for to resist Hsiungnu.[translate] a辅助管理 Assistance management[translate] aPlay-Doh 戏剧C大调的第1音[translate] aI feel very tired .I always can't forget all of that 正在翻译,请等待... ...
Planned Preventive Maintenance (PPM) is a proactive strategy that schedules regular maintenance to prevent equipment failures, aiming to reduce reactive maintenance costs and extend asset longevity. In contrast, reactive maintenance, or breakdown maintenance, involves repairing equipment only after it fails...
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