To make an aspherical surface needs complicated operating steps and skills.

非球面的加工需要复杂的操作步骤和操作技能。

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The author expounds operating steps of color matching of gravure ink in detail.

作者最后还对凹版油墨调色的操作步骤作了详细介绍。

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Operating personnel should read the operating manual in detail, and can operate after memorizing the operating steps.

操作人员应详细阅读操作说明书，并熟记操作步骤后方可进行操作。

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If so, it will be on the basis of evidence not discernable at this writing indicating that Palestinian Authority (PA) Chairman Yasser Arafat has, at last, taken steps to exercise control over terrorists operating from areas for which he is responsible.

CENTERFORSECURITYPOLICY: ��Mr. Arafat, Renounce This Map��

But the recent steps to facilitate cash management will cut costs for foreign corporations operating onshore, accelerate the integration of the yuan into the global economy, and boost offshore liquidity.

WSJ: Business Asia: The Quietly International Yuan

Gourlay, 46, steps up from his current role as the Stamford Bridge outfit's chief operating officer.

BBC: Gourlay becomes new Chelsea chief