标签如下：
“ short_name”：“ B738” “ ac_code”：“ B738” “名称”：“ B737-800” ＃飞机类型 “ num_engine”：2 “ engine_model”：“ V2500” “ engine_type”：“ Jet” “ wake_category”：“ M” ＃质量 “ mass_ref”：65300 “ mass_min”：41150 “ mass_max”：78300 “ mass_maxpayload”：20300 “ mass_grad”：0.0822 ＃飞行信封 “ max_opSpeed”：174.9110 “ max_opMach”：0.8200 “ max_opAltit”：12497 “ max_altit_at_MTOW”：10663 “ temp_grad”：-16.4897 ＃空气动力学 ＃机翼面积和自助餐系数 “ wing_ref_area”：122.6 “ initial_buffet_lift”：1.4041 “ lift_coeff_grad”：0.79242
