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The engineering result confirms that the proposed method is better than the other wavelet methods for matching fault feature of mechanical signal, and the weak impact-rub fault caused by the axis misalignment and rotor imbalance of a key rotating machine
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工程振动信号分析表明,同其他类型的小波相比,用提升方法构造的小波能更好地匹配机械信号故障特徵波形,因此较理想地提取出了某炼油厂重催机组转子不平衡、轴系不对中和轻微碰摩的故障特徵。 |
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The engineers and technicians are still conferring on the unexpected accident.
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工程师和技术员们还在讨论此次意外事故。 |
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The engineers blew up the bridge with dynamite.
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工程师们用炸药炸掉了那座桥。 |
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The engineers bridged the river.
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工程师们帮这条河架桥。 |
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The engineers had to know the depth profile of the route to estimate the length of cable that had to be manufactured.
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工程师们必须要知道路的深度(纵向)剖面,才能够估计将要造的电缆的长度。 |
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The engineers have worked out some ways of controlling quality in high-speed industrial mass production.
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工程师们已经找出一些方法来控制在高速、大批量情况下生产出来的产品的质量。 |
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The engineers identified the bothersome cross-talk pathways and invented an ingenious system for eliminating them.
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他们找出了干扰听觉的漏音路径,并进一步想出一个妙计来消除它。 |
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The engineers set to on repair work to the bridge.
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工程师奋力进行修桥工作. |
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The engineers tested smooth, porous and textured concrete surfaces with four tire designs.
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工程师在各种表面,包括光滑的、多坑洞及特定结构的混凝土路面,测试了四种不同的轮胎。 |
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The engineers were in Baghdad to carry out repairs at a power station. They were seized by unidentified gunmen late Monday.
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上周一,这些工程师被不明身份的枪手劫持,他们当时在巴格达的一个发电所执行修理任务. |
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The engines are driven by steam.
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这些发动机是由蒸汽驱动的。 |