It is the key of the paper to design a type of detecting structure, which can avoid being contaminated by smeary oil, so that the on-line test of oil content in the wastewater can be realized in deed.

此次设计的关键之处是设计了一种避免油污污染测量探头的结构，从而使污水含油率检测能够实现真正的在线。

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One Osaka project, to build a Universal Studios theme park, has been dogged by allegations that the city has been helping one of its private-sector partners, Sumitomo Metal Industries, to avoid the cost of cleaning up the contaminated land on which the park is to be built.

ECONOMIST: Japan