The cracking stock makeup, running period of plant, energy consumption, and their effects on the production cost are analyzed.

对裂解原料结构、装置的运行周期和能耗及其对乙烯生产成本的影响进行了分析。

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By adopting this technique, continuous catalyst regeneration was realized, operating severity decreased and running period of the unit was prolonged.

采用该技术可实现催化剂连续再生，降低了装置操作难度，提高了装置运行周期。

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The running period is always unstable, since the double-room anion exchanger of the water treatment plant have restricted the economic running seriously.

水处理站双室阴离子交换器自投运以来周期一直不平稳，严重的制约着水处理站的经济运行。

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The Government's proposed changes are now subject to a public consultation period running until 9 March 2007 with the final East of England plan set for publication in the middle of the year.

BBC: NEWS | UK | England | Housing plans not 'sustainable'

There had been a broad assumption that most banks under investigation were suspected of manipulating Libor submissions in the financial crisis period running from 2007-9 to appear healthier than they really were, sometimes allegedly with the implicit nod from policy makers.

CNN: Rate probe turns to four major banks

Still, several brokerage firms said their new contract activity was running ahead of the same period last year.

WSJ: Property Slips in Manhattan