Inadequate fuel preparation is an important cause of technical problems with gasifiers.

准备不足是燃料与气化技术问题的重要原因。

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Parts of PAH are possible human carcinogens formed during the combustion of fuel both in the smoking and in the direct drying processes involved in the preparation of food.

制备食品时的烟熏和直接干燥工序在燃烧过程中形成的部分多环芳烃可能是人类致癌物。

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Preparation of fuel and transport system for coal fired pressurized fluidized bed always needs pneumatic method for feeding the fuel into the pressurized tank and then to the furnance.

燃煤增压流化床的燃料制备与输送系统往往需采用气力输送方法送入加压罐后再送入炉内，系统复杂。

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The Australian's team-mate Sebastian Vettel ended the session 16th fastest, sandwiched between the Ferraris of Bahrain winner Fernando Alonso and Felipe Massa as all three appeared to concentrate on race preparation with heavy fuel loads.

BBC: Lewis Hamilton fastest in Friday Australian GP practice

The union also successfully disputed Mr Scargill's fuel allowance at his Barnsley home and payment for the preparation of his annual tax return but not the cost of his security system in Yorkshire.

BBC: Arthur Scargill

At midweek, Mr Ahmadinejad had yet to unveil long-awaited proposals aimed at unblocking the diplomatic impasse that Iran caused last month when, after two years of interruptions, it resumed work in preparation for enriching uranium for use as reactor fuel, says Iran, though many governments suspect it of having bomb-making ambitions.

ECONOMIST: Iran