Correct position should be: don't be too close to front seats will be moved to the steering wheel, instrumentdesk, to the upper edge of the seat headrest to eye contour;
正确的位置应该是：不要将前座椅移到太接近方向盘、仪表台的地方，要保证座椅头枕的上边缘与眼睛等高；
2
Using moderate resolution capabilities of a desk time-of-flight (TOF) instrument, the fragmentation regularity from electron impact mass spectra of vitexin was studied.