At low temperatures, mixture formation is poor due to the large fuel droplets concerned, and due to the inefficient mixing of the fuel with the air drawn in by the engine.

低温时，燃油黏度和密度增大，且发动机所吸入的空气无法与燃油充分混合，从而影响油气混和气的形成。

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Results show that the photocatalyst immobilized on concrete exhibits excellent photocatalysis, while the photocatalysis of bituminous mixture is poor.

研究表明：水泥混凝土负载的光催化剂具有优越的光催化功能，而沥青混合料的较差。

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Sizing properties of this type of grafted starch are better than acid hydrolysis starch size and mixture size with little PVA size. It is poor than mixed size with large PVA size.

此种接枝淀粉的浆用性能优于酸解淀粉浆料及含少量PVA的混合浆，但仍和含较高量PVA的混合浆料存在差距。

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The small scattered community of Oscarey was a mixture now of poor and better-off: besides the remnants of the estate families, there were newcomers.

NEWYORKER: Faith

Latin America's overall record of productivity growth is poor, thanks to a toxic mixture of burdensome regulation, a large informal economy and a lack of innovation.

ECONOMIST: Productivity in Latin America

Instead, they will be frustrated that they stand three points behind their rivals after being denied victory by a mixture of questionable refereeing decisions and poor finishing.

BBC: Arsenal 0-0 Sunderland