The development and application of chalcogenide glasses as an IR transmitting material with high performance have long been impeded by insufficient degree of purity present in glasses.

高性能透红外硫系玻璃材料的开发和应用在很大程度上受到杂质对透过性能影响的制约。

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The relation between sound velocity and syntonic frequency is gained by analyzing the ultrasound transmitting in thin material.

对薄型材料中超声波传播规律进行分析，得到材料声速与共振频率的关系。

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Information work construction is to strengthen with effort the construction of material and information work, including collecting, storing and transmitting intelligence against organized crimes.

大力加强情报资料工作的建设的构想包括反黑情报的机构、情报收集、情报存储、情报传递等。

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Opportunity has been trundling around Mars ever since, though it was designed for only a ninety-day mission. (Spirit got stuck in a sand trap in 2009 and quit transmitting nearly a year later.) It never found the lake bed, or organic material of any kind.

NEWYORKER: The Martian Chroniclers