在修正的阿伦尼斯公式基础上，提出固体推进剂贮存寿命的整体预测方法和两步回归预测方法。
Based on modified Arrhenius formula, an integral method and a two-step regression method for storage life prediction of solid propellant are presented.
城中bbc的凯伦·阿伦说，汽车在下m 1高速公路时，从交流道上侧翻，高速公路正好穿越约翰·尼斯堡市中心。
The car overturned as it came off a slip road on the M1 motorway, which travels through Johannesburg city centre, says the BBC's Karen Allen in the city.
城中bbc的凯伦·阿伦说，汽车在下m 1高速公路时，从交流道上侧翻，高速公路正好穿越约翰·尼斯堡市中心。
The car overturned as it came off a slip road on the M1 motorway, which travels through Johannesburg city centre, says the BBC's Karen Allen in the city.
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