However , there is a kind of un - matching gap between object oriented models and rational models 因此在這種應用背景下,對象關(guān)系阻抗不匹配的矛盾就顯得更加突出。
The latter can conquer difficulty because object domain and relation domain don ’ t match 后者能夠克服由于對象范例和關(guān)系范例這兩個領(lǐng)域之間存在的“阻抗不匹配” 。
Because ip telephone systems employ the packet switching technology , the echo signals generated by the hybrid due to the impedance mismatch usually experience longer transmitting delay , which significantly decrease the speech communication quality 對于ip電話系統(tǒng)而言,由于采用了分組交換技術(shù),由2 / 4線轉(zhuǎn)換器阻抗不匹配而產(chǎn)生的回波在系統(tǒng)中傳輸?shù)臅r延較長,這將加重回波對語音通信的影響。
The negative effect which is resulted by the object - relational impedance mismatch is all through the development cycle . this paper also introduces the method to develop some useful tools which can generate codes automatically based on object persisting framework 此外,由于對象阻抗不匹配對應用系統(tǒng)的消極影響貫穿于系統(tǒng)的設(shè)計開發(fā)階段,本文還詳細敘述了基于持久層框架的輔助開發(fā)工具的設(shè)計及實現(xiàn)過程。
According to the radar - absorbing model , the performance of rams of various absorber - volume - percentage with various frequency and the radar obsorbing performance of which in various thickness is predicted . according to the radar - absorbing model , the prerequisites of microwave electromagnetic parameters and the border curves for a single - layer homogeneous absorbing coating backed by a perfectly conducting plate to produce zero specular reflection are obtained by the steffensen speedup approach to solve the complex transcendental equation 以吸波模型為依據(jù),用計算機求解了單層均勻各向同性吸波材料的阻抗匹配條件,通過數(shù)值模擬得到了吸波材料阻抗匹配時電磁參數(shù)邊界曲線的數(shù)值模擬等式和阻抗不匹配時寬帶吸波材料電磁參數(shù)的合理搭配規(guī)則和頻散特性。