Separation size is an important index in material screening operation.

分离粒度是筛分作业最重要的指标。

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YA circular vibrating screen is suitable for the coal, limestone, gravel, sand, metal or nonmetal ore and other material screening.

YA圆振动筛适用于煤、石灰石、碎石、砂砾、金属或非金属矿石及其他物料的筛分。

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In screening for basic material stocks using the ValuEngine.com Valuation Model, I found seven companies that are more than 40% overvalued.

FORBES: Book Profits On Overvalued Basic Material Stocks Now

"This has included reviewing the procedures followed when treating Mr Pritchard, taking statements from and screening of all staff involved in his care, and testing of the injection material, " the statement said.

BBC: NEWS | UK | Wales | North East Wales | Man contracted MRSA after jabs