GTSGI	Green Tea with Geographical Indication
FGTSGI	Famous Green Tea with Geographical Indication
CNN	Convolutional Neural Network
SVM	Support Vector Machine
CNN-SVM	a CNN backbone combined with a SVM classifier
CNN-Shi	a CNN model proposed by Shi et al. [41]
CNN-SVM-Shi	CNN-Shi combined with a SVM classifier
E-nose	Electronic Nose
MOS	Metal Oxide Semiconductor
HSMF	Huangshan Maofeng
YDMF	Yandang Maofeng
EMMF	Emei Maofeng
LXMF	Lanxi Maofeng
QSMF	Qishan Maofeng
MTMF	Meitan Maofeng
XYMJ	Xinyang Maojian
GLMJ	Guilin Maojian
DYMJ	Duyun Maojian
GZMJ	Guzhang Maojian
QSMJ	Queshe Maojian
ZYMJ	Ziyang Maojian
PCA	Principal Component Analysis
RBF	Radial Basis Function
TP	True Positive
FP	False Positive
TN	True Negative
FN	False Negative
R	Recall
P	Precision
SGD	Stochastic Gradient Descent
PC1	Principal Component 1
PC2	Principal Component 2