The point of the screening picture form, halftone dot uniformity and quality which will affect the printed picture of clothing.

加网图片的点形、网点均匀性及印刷网点质量，影响印刷画面的平服性。

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Chertoff, who works as a security consultant for companies that make screening devices that can identify explosives hidden under clothing, urged that such machines be deployed more widely.

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These include cholesterol checks, eye exams, employment counseling, clothing distribution, benefits claims assistance, PTSD and trauma screening, personal care items and meals.

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"Advanced imaging technology enhances security by safely screening passengers for metallic and non-metallic threats including weapons, explosives and other objects concealed under layers of clothing without physical contact, " Soule said.

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