Technical parameter 1. The numbers of X-ray tubes used in the product are also used as Product number and X-ray generator (bulb tube head) number. 2. The current and voltage of X-ray tubes are fixed in three groups, they are: X exposure voltage（KVP） 60 65 70 X-ray current（mA） 0.50 0.85 1.10 3. When adding up voltage, total current is less than 2A and total power is 500W 4. Drain current and earth resistance are in accordant with the stipulates in GB9706.1 5. The three groups of voltage (60KV、65KV、70KV) are adjustable. 6．Wireless Remote control in any angles within 10 meters part form the control box 7. The parameter of X-ray generator (bulb tube head) 7.1. The parameter of X-ray tubes a. Focus index: 0.3?.3mm2 b．The voltage of the-highest-voltage generator: 90KV c. The highest inverse peak voltage: 90KV d. Filament characteristic: Vf=5V?.5V，If=3A e. Target surface obliquity: 12? f. the cooling manner of bulb tube head: oil immersion 8.7.2 The parameter of X-ray generator (bulb tube head): a. focus-skin distance: 200mm b. The thickness of filter-ray film: more than 1.5mmAl c. The leakage rate of X-ray: no more than 0.002mGy/h (No. 29.204.3 in GB9706.12 prescript that the leakage rate of X-ray is no more than 0.25mGy/h) d. The manner of limiting beam: using planigraphic device