It is pointed out on the basis of analysing the quantization error from position meas- urement with CCID,the presision by measuring the pattern geomefric center is better than that of by measuring the pattern density center.
The investigation indicates that amphioxus (Branchiostoma belcheri) is mainly distributed within the area with 111°10′~111°17′longitude, 21°19′~21°27′latitude, which covers 195.5km2 in Maoming Dafangji sea areas. The average resource density is 51~86 ind/m2, the highest is 815 ind/m2. The area with a high density is centered in the west and northwest of the Xiaofangji Island.
The electric current of flash can reveal some characteristic of electric fields in thundercloud. Forepart radar echo come into being on upper level and respectively extend upwards and downwards, and 4km altitude is the strongest echo region.
2) There is a rippling appeared in a beam of ion tail on March 3, 1997. Its phase velocity is about 200 km/s and its amplitude is about 0.2 million km. The width of this ion beam is 0.08 million km. The relevant data are obtained by means of PDS measurement.
The optimized distances or radii Ri from the ith atom to the density center of the molecule are listed in Table I.
例句来源
The modulation transfer function(MTF)of the linear charge-coupled imaging de- vices(CCID)is strictly analysed on the basis of references[1]-[5]、[7]and the ba- sic principles for measuring the transmisson efficiency of CCID with MTF are discussed. It is pointed out on the basis of analysing the quantization error from position meas- urement with CCID,the presision by measuring the pattern geomefric center is better than that of by measuring the pattern density center.
With the interior ballistic model,the combustion process of the centre initiator in the gas generator has been dscribed in this paper. As the numerical simulation results,the influence of the grain diameter and charge density of the initiating agent, exit nozzle numbers,and seal meterials have been discussed.