Increased demand for animal products has also led to the breeding of more genetically uniform domestic animal populations that are more vulnerable to pathogens, he says.

他说，动物产品需求的增长还导致家畜基因越来越单一，使家畜更容易感染病菌。

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Uniform leavening over an extended time improves the quality of many baked end-products, the crumb structure acquires finer and more uniform porosity, while the crust has greater elasticity.

在持续时间内均匀发酵可以改善许多焙烤终产品的品质；面包屑状结构具有了更好的更均匀的多孔性结构，而面包表皮也具有了更大的弹性。

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Owing to the short residence time, more uniform gas-solid flow and reduced backmixing of downer reactor, it can obtain more object products and the dry gas yield can be inhibited.

由于下行床具有短停留时间、气固流动更均匀和返混小的优点，能获得更高的产品收率，使干气收率受到抑制。

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