The test results and the main factors of influencing ash cutting, such as, particle velocity, property of ash cutting and particle size are discussed at length.

作者对试验结果及影响飞灰磨损的主要因素，如粒子速度、灰的磨损性能、粒度等进行了讨论。

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Ash iron casting contain a lot of flake graphite, extremely easy cutting, commonly used to make a thick wall.

灰口铸铁中含有大量的片状石墨，极易切削，常用来制作厚壁件。

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Under the effect of a large amount of fly ash treated by cutting, the wall surface will produce wear.

在大量飞灰长期反复切削作用下，管壁表面将产生磨损。

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Waterstone's poses a particular threat to traditional, pokey bookshops cutting a dash with its fashionable black-ash shelving and bright red carpets.

ECONOMIST: The book trade

Mr Dockrell, from Ash, said the Canadian province of Saskatchewan clearly illustrated how the ban was effective in cutting smoking.

BBC: Smoking ban lessons from abroad