A volatile pressing oil HC-L200 was formulated with hydrotreated narrow fraction light base oil, fatty acid ester lubricant and additives, such as homemade wetting agent and compounded antirust agent.

根据铝翅片冲压加工工艺的技术特点，选用加氢精制窄馏分轻质油为基础油，添加特制的脂肪酸酯为油性剂以及自制的润湿剂和复合防锈剂等添加剂调合成HC - L 200挥发性冲压油。

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The tax base is narrower in emerging markets and revenues more volatile.

税基相对更为狭窄而财政收入的波幅更大。

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Consider Salim Khan, a dishwasher at a forward operating base in the volatile Iraqi province of Diyala.

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It could be a decent way for companies to build a base of less-volatile long term shareholders.

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Against that, Unionist politicians pose two arguments: that oil revenues are volatile and that the broader tax base of the UK permits greater resilience against short-term shocks such as sharp increases in unemployment and, therefore, benefits.

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