The design and realization of handheld mobile position - fixed terminal 手持式移動定位終端的設計與實現(xiàn)
Abnormal phenomenon will not occur within 4 . 5kg net weight from the dtrection of the fixing terminal of the resistor 將電阻體的端子固定于一端,直接加重4 . 5公斤以內(nèi)的重量,異常現(xiàn)象不會發(fā)生
The products adopts curve - sealing structure , and are tighten by the fix terminal , they have performance of water - proof and dust - proof , the protection class reaches ip65 本產(chǎn)品采用曲路密封結構,直接用緊固件緊固,具有良好的防水防塵性能,防護等級為ip65 。
Basic standard for the calculation and measurement of electromagnetic field strength and sar related to human exposure from radio base stations and fixed terminal stations for wireless telecommunication systems 110 mhz - 40 ghz 與人體暴露于無線通信系統(tǒng)110 mhz 40 ghz基地電臺和終端電臺相關的電磁場強度及sar的計算和測量基本標準
A full mathematical model of optimal flow pattern design withengineering constraints was put forward , based on modern optimal control theory . an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine . according to integral optimization of turbine stages , a full physical model and mathematical expression were put forward for proposition of optimal flow pattern , including all performance parameters in turbine stages . this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state , fixed terminal condition and constraints for part of state terminal variables . the program was also worked out according penalty function method and conjugate gradient method . the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function 把近代最優(yōu)控制論方法引入軸流透平葉片的設計,在優(yōu)化的軸流透平子午通道內(nèi),建立包括透平級內(nèi)所有性能參量的最優(yōu)流型命題的完整的物理模型及其數(shù)學表達式,并歸化為一個在給定初始狀態(tài)、自變量終端固定、部分狀態(tài)變量終端受有約束的條件下,使級的某一性能指標(如級的功率)達到最優(yōu)的最優(yōu)控制問題,應用“代價函數(shù)法”及“共軛梯度法”編制計算程序,計算得到符合給定約束條件、并使目標函數(shù)取極值的最優(yōu)環(huán)量分布,結果是令人滿意的。