17cm
1.In shooting, competitors have 40 seconds to take each of 20 shots at a 17cm square target.
3.By use of some atom parameters in optical-field-ionized (OFI) plasmas obtained from the extended Cowan program based on Maxwell to suit any electron distribution with the help of additional program, the peak gain coefficient of Ni-like Kr system is calculated for the ion densities of 1×10 17 cm -3 and 3.2×10 17 cm -3 respectively after considering Doppler broadening and natural broadening. The theoretic peak gain coefficients of 14 cm -1 and 141 cm -1 are obtained respectively.
5.The high activation root area changed as same as that of root cap density area, with the lateral root grew gradually far from the main root. The horizontal distribution scope of high activation root area was in 5~10cm at V3 stage and 13~40cm at R5 stage from the main root, and the vertical distribution was two layers that were 5~17cm and under 30cm respectively.
6.2-DE with the first dimension isoelectrofocusing using 17cm pH3-10 IPG ready strips was employed to compare with the two different modes made up of the sample lysate I and II.
10.the left ECA was3.223210.7131 mm,right was3.1977+0.6539mm; the left VmM was 15-75cm/s,right 17-69cm/s respectively.

