Operating Surplus refers to the balance of the value added created by the resident units deducting the labourersre m unera-' tion , taxes on production and the depreciation of fixed assets.

营业盈余是指常住单位创造的增加值扣除劳动者报酬，生产税净额和固定资产折旧后的余额。

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Sewage sludge which mainly comes from the primary settling tank and discharge of surplus sludge is the deposit produced in each operating unit in municipal wastewater treatment plant.

城市污泥是城市污水处理厂经各级处理净化污水而产生的沉积物，主要来自初沉池和剩余污泥的排放。

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At the same time, the market is operating with limited surplus production capacity, leaving it vulnerable to supply disruptions.

与此同时，鉴于全球剩余产能不足，全球原油市场很难应对供应中断的冲击。

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"The government are not targeting an under-performing agency with a need to make savings as the DVLA is self-financing and produces a significant operating surplus, " he said.

BBC: Alex Attwood to hold talks over Coleraine DVLA jobs

Underlying revenue and operating surplus fell by 1% in 2006.

ECONOMIST: The private sector may not play the government's game

Gross (or net) operating surplus of the economy is the part of value added which remains with producers after deducting outlays related to the remuneration of employees and taxes on production.

UNESCO: Belarus: Report: Part I: Descriptive Section