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latchdown kwy
锁定键
Preparation of Heat Resistant, Salts Tolerant and Inhibitory Filtrate Loss Reducer KWY for Aqueous Drilling Fluids from Acrylic Fibrious Waste
具有抑制性的抗温耐盐改性腈纶钻井液降滤失剂KWY的研制
latchdown
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KWY
abbr. 键槽(=keyway)
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