Rhenium is used to make high-temperature alloys for jet engine parts and in high-octane, lead-free gasoline.

铼可以用来制造喷气式发动机的耐高温合金部件，也是高能量的无铅汽油的成分。

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Based on sandblast working principle and structure characters of blast gun, free jet model was developed in eject sect.

根据喷砂工作原理和喷枪结构特征建立了引射段的自由射流模型。

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The results show that the most significant feature of turbulent free jet is the intermittently generation, shed of elliptic vortex rings, and once they generate they shed immediately.

研究结果表明：湍流椭圆自由射流的最显著特征是椭圆涡环的间歇产生、脱落，这些涡环一旦产生立即脱落。

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He accepted free travel by private jet to Chicago, Las Vegas and New York City, according to the indictment.

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Airlines such as American, Delta, Jet Blue and United were helping provide assistance to the country in the form of free miles for its program members and seats for aid organizations.

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Other reported contributions include offering more CF-18 jet fighters for joint patrols of North American skies and Canadian soldiers for peacekeeping duties in Bosnia to free U.S. troops there for duty elsewhere.

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