The nominal diameter has little significance in sediment transportation. 等容粒徑在沉沙輸移中意義不大。
The water droplet diameter in diesel emulsion was characterized with microphotography and arithmetic statistic mean method. 利用顯微攝像技術(shù)及算術(shù)統計平均的方法表征柴油乳化液水滴粒徑。
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