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An oppressive or nightmarish burden.
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沉重的或梦魇般的重担 |
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An optical device designed to project images of atmospheric phenomena, such as clouds, on the inside of a dome.
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气象仪将大气现象的映像，如云，投射到一个圆顶内侧的一种光学装置 |
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An optical fiber transports the light to the photomultiplier.
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光纤传输光线到光电倍增管。 |
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An optical instrument that uses a lens or a combination of lenses to produce magnified images of small objects, especially of objects too small to be seen by the unaided eye.
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显微镜用一个透镜或一些透镜的组合来制造小物体的放大形像的视力工具，通常用来观察肉眼看不到的物体 |
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An optical phenomenon that creates the illusion of water, often with inverted reflections of distant objects, and results from distortion of light by alternate layers of hot and cool air.
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海市蜃楼：一种可以创造出水和远处物体的倒影的光学现象，是冷热相间的几层空气导致的光线扭曲而产生的结果. |
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An optical scanner can actually read characters and transfer them to the monitor screen of a computer.
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光学扫描仪能读出字符，并将其转换到电脑显示屏上。 |
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An optical transmission system including several concave mirrors is designed to improve the sensitivity of measurement by extending the optical path for measurement.
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还特别设计了一个利用多个凹面反射镜来延长测量光程的光学系统，可提高系统的检测灵敏度。 |
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An optimal control scheme for sequencing batch reactor (SBR) wastewater treatment processes is proposed to achieve the wastewater effluent standards with minimal energy consumption.
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摘要针对序批式反应器污水处理工艺，提出一种以排水质量指标为约束条件，以能量消耗最小为目标的最优控制方案。 |
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An optimal design method for the prototype filter design of the filtered multitone modulation system is proposed.
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摘要给出了滤波多音调制系统的原型滤波器优化设计方法。 |
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An optimal design on the insulation layer thickness of buried oil pipeline for an oil production complex in Daqing Oilfield is made, and comparison and analysis are also made between optimal design result and actual measured result.
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对大庆采油五厂的一条埋地输油管道保温层厚度进行了优化设计，并将优化设计结果与运行现状的测试结果进行了对比分析。 |
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An optimal nutritional supplement needs to incorporate all five essential components: phytonutrients, antioxidants, vitamins, minerals and trace elements.
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最理想的一种营养补充品必须包含五大类人体所需的营养成分，分别是植物性营养素、抗氧化剂、维生素、矿物质以及微量元素。 |
