field selected length 中文意思是什麼
field selected length
解釋
安段選擇長度-
This paper describes a new method to select these parameters, including to determine the focus length, relative aperture and field of view of new optical system in design by means of making reference to previous star sensors and their optical systems ; to forecast the acquiring probobility of star sensor in accordance with selected param eters ; to determine the principal design wavelength and spectral coverage by means of integrat ing the spectrum of stars
本文介紹一種確定光學系統參數的新方法，包括通過參考比較已有星敏感器及其光學系統特性來選取新光學系統焦距、相對孔徑和視場；根據所選取的參數預計星敏感器的捕獲概率；採用綜合恆星光譜方法確定光學系統中心波長和光譜范圍。 -
In the wavefield - spread area, we uses the phase - shift operator as constraint in frequency - wavenumber field, while beyond the wavefield - spread data, we uses zero point at the ends of phase - shift operator as constraint to take discrete smooth interpolation so that the resulted operator satisfies two - order smooth and the length of this operator can be selected shorter in frequency - space field
通過離散光滑插值法，在頻率波數域中，以傳播區內的相移運算元為約束，在傳播區外的運算元兩端處以零點為約束，進行離散光滑插值，使得所得運算元具有二階光滑可導性，則其對應的頻率空間域中的運算元就可以取得很短。 -
Plc has small cubage, strong function, high reliability, ability to adapt abominable field environment of construct machine to face. in order to improve adaptive ability of hydraulic pile hammer to various soil, various finial velocity and dropping length must be obtained by adjusting time of lifting, dropping and keeping pressure that is accurately selected by the control system of plc
Plc體積小、功能強、可靠性高、能適應建築施工機械惡劣的野外環境。通過plc電控系統可以準確選擇不同的上升、下降和保壓時間，使得液壓打樁錘具有不同的下打高度，從而獲得不同的打擊末速度，提高了液壓打樁錘對不同土壤的適應能力。
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