Through experiment this paper analyses the signals of the gear box, then comparing with the model curve of the different conditions in order to distinguish the operating trouble of the gear box.

结合实验对齿轮箱信号进行时间序列分析，对比各种工况下的模型曲线，识别齿轮箱的运行故障。

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Many firms operating brick and mortar stores are in trouble.

许多经营实体店的公司都陷入了困境。

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From the Philippines to Peru, companies that want to export clothing, iron ore, or asparagus are having trouble getting loans from Banks to keep operating and to ship their goods.

从菲律宾到秘鲁，打算出口服装、铁矿石或芦笋的公司在获得银行贷款方面正面临困难，无法继续运营并将其货物运往国外。

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But critics of the Indonesian government have been outraged that militias are still operating in the Indonesian half of the island, and occasionally cross into East Timor to make trouble.

ECONOMIST: Indonesia trades promises for money

Much better would be to develop a network of smaller "forward operating bases" around the world, which could serve as a springboard for troops monitoring a threat or responding to trouble.

ECONOMIST: Patrolling the world | The