这些观测有助于火山灰咨询中心的模式研究者们改进预报模型，向飞行员和其他航空爱好者发布更准确的警报。
These observations help modelers in volcanic ash advisory centers improve forecasting models and issue more accurate warnings to pilots and others with aviation interests.
此系列对军事模型制造商，遥控模型制造商，航空史爱好者来说是一个有很高价值的参考资料。
The Combat Aircraft series provides a valuable resource for military model makers, remote control model makers and aviation history enthusiasts.
此系列对军事模型制造商，遥控模型制造商，航空史爱好者来说是一个有很高价值的参考资料。
The Combat Aircraft series provides a valuable resource for military model makers, remote control model makers and aviation history enthusiasts.
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