国内国际主要机场代码，方便大家直接粘贴进gcmap

国内主要机场代码：

CAN, CGO, CGQ, CKG, CSX, CTU, DLC, FOC, HAK, HET, HFE, HGH, HHA, HKG, HRB, INC, KHH, KHN, KMG, KWE, KWL, LHW, LXA, LYA, MFM, NGB, NKG, NNG, PEK, PVG, SHA, SHE, SYX, SZX, TAO, TNA, TPE, TSN, TYN, URC, WNZ, WUH, XIY, XMN, YNT, ZGC, ZUH

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国内主要枢纽机场代码：

PEK, CAN, SHA, PVG, CTU, SZX, KMG, XIY, CKG, HGH, XMN, CSX, NKG, WUH, DLC, TAO, SYX, HAK, TSN, HKG, MFM, URC, TPE

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亚洲（除中国）主要机场代码：

NRT, HND, KIX, FUK, OKA , ITM, NGO, ICN, GMP, PUS, CJU, BKK, DMK, CNX, HKT, KUL, PEN, BKI, MNL, CRK, CGK, BDO, DPS, DEL , BLR, CMB, SIN, SGN, HAN, KHI , BOM, BLR , KTM, DXB, DOH, AUH, DAC, JED, CCU, THR , BAK, ISB , ASB, DYU , LBD, OSS, TBS, MDL

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大洋洲主要机场代码：

MEL, SYD, BNE, PER, AKL

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欧洲主要机场代码：

LHR, LGW, STN, LTN, LCY, LPL, MAN, CDG, ORY, MRS, LYS, TXL, BER, MUC, BRE , FRA, STR, HAM, NUE, ZRH, BRN, GVA, BSL, MAD, BCN, VLC, SVQ, AMS, RTM, FCO, MXP, VCE, FLR, TRN, LIS, OPO, CPH, PRG, HEL, ATH, ARN, OSL, WAW, BUD, VIE, BRU, LUX, SVO, DME, KBP, IEV, BEG, BUH, ZAG

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北美主要机场代码：

LAX, SAN, SNA, SFO, SJC, SEA, PDX, PHX, LAS, SLC, DEN, AUS, IAH, HOU, DFW, MCI, STL, MSY, BHM, MEM, BNA, ORD, DTW, IND, CVG, CMH, CLE, PWM, BOS, LGA, JFK, EWR, PIT, PHL, DCA, BWI, IAD, CLT, ILM, CAE, CHS, ATL, MCO, TPA, MIA, HNL, YVR, YYZ, YUL, YOW, YHZ, YYC, YEG, TIJ, MEX, CUN

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加上表格方便对照：