适用介千周：水、油、气及某些腐蚀性液体。
俄亥俄河被称作美国的鲁尔后，就像德国一样，沿河有丰硕的高品千周的焦煤，而且因其钢铁而闻名。
The Ohio river has been called the American Ruhr, As in Germany, the area along the river is rich in valuable deposits of high-grade coking coal and is wellknown for its steel industry.
俄亥俄河被称作美国的鲁尔后，就像德国一样，沿河有丰硕的高品千周的焦煤，而且因其钢铁而闻名。
The Ohio river has been called the American Ruhr, As in Germany, the area along the river is rich in valuable deposits of high-grade coking coal and is wellknown for its steel industry.
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