Q: We saw pictures and reports on the Internet about the J-20 fighter jet.
问：我们看到互联网上流传关于“歼-20”战斗机的图片和报道。
2
Attention: when uses large capacity or the reinforced insulation to the normal product, should add "J" or "Q" behind the product model letter for expressing.
注：当对正常产品采用大容量或加强绝缘时，应在产品型号字母后面加“J”或“Q”表示。
3
Xu M. -z., Luo L. -s., Li Y., Wu Y. -q., Jiang X. -h., Xu J. -s. Intravascular ultrasound versus coronary angiography in coronary artery stent implantation.