approximate vt. 1.使接近。 2.接近;走近。 3.近似,約計。 4.模擬。 5.估計。 approximate a solution to a problem 使問題近于解決。 approximate something to perfection 使某物臻于完善。 The total income this year approximates 10,000 dollors. 今年總收入接近一萬元。 approximate the motions of the stars in a planetarium 在天文館中模擬行星的運行情況。 We approximated the distance at 100 miles. 我們估計行程距離為100英里。 vi. 近于。 His income this year approximates to 8,000 dollars. 他今年的收入接近八千美元。 adj. 近似的,大概的。 an approximate account 簡要的說明。 an approximate date 大約的日期。 the approximate estimate 大概的估計。 an approximate number 概數(shù)。 an approximate value 近似值。 adv. -ly 大體,大致。
The train ' s approximate time of arrival is 10 : 30 列車到達的時間大約是10 : 30 。
The approximate time is three o ' clock 大概的時間是三點鐘。
Approximate times for the express installation : 1 minute @ 56k less than 1 minute @ t1 “快速安裝”大致所需時間:傳輸速率為56k時為1分鐘傳輸速率為t1時少于1分鐘。
With the time going by , the tasks in the round robin with multiple feedback get approximate time 隨著實驗時間的變長,多級反饋循環(huán)調(diào)度中的任務分得的cpu時間趨向于一致。
Write down goals for those situations you want to change and an approximate time frame for reaching each goal 寫下你想改變那些局面的目標,并制定出實現(xiàn)每一個目標所需的大概的時間表。
He said he needed to decied whether an interview would be applicable and if so , he could then make an approximate time to see her 他不贊成她的方式并告訴她如果他打算任命某人,必須先有書面申請。
We get the estimates of the upper bounds of hausdorff and fractal dimensions for the global attractors . in section 5 . 3 , the cauchy problem is studied , by using the weighted function space and the interpolating inequality , the existence of the global attractors for the damped generalized coupled nonlinear wave equations in an unbounded domain is proved . in section 5 . 4 , the time periodic solution problem of damped generalized coupled nonlinear wave equations with periodic boundary conditions is studied , the existence of time periodic soluation of this problem is proved by using the convergence of approximate time periodic solution sequences 第五章,考慮了一類廣義耦合的非線性波動方程組,在第二節(jié)中討論了周期初值問題,證明了整體光滑解的存在性和唯一性,得到了整體吸引子,給出了hausdorff維數(shù)和分形維數(shù)的上界估計;在第三節(jié)中討論了cauchy問題,利用加權函數(shù)和加權空間的插值不等式,證明了無界區(qū)域上整體吸引子的存在性;在第四節(jié)中證明了時間周期解的存在性。
The problem of signal processing for direct - sequence code - division - multiple - access ( ds - cdma ) signal over multipath frequency - selective mobile channels is considered . a new blind receiver is proposed . without the knowledge of the multiple - access interference users spreading code and the channel characteristics , the receiver achieves blind detection with prior knowledge of only the desired users spreading code and approximate timing . by using reduced rank adaptive decorrelating filter and adaptive multipath combiner which is based on decision - directed algorithm , the receiver gets the ability to combat both fading and the near - far effect at low cost . simulation results demonstrate that the proposed receiver offers high performance 本文研究多徑頻率選擇性衰落信道下直接序列擴頻碼分多址( ds - cdma )信號的處理問題,提出了一種新型的盲接收機.該接收機不需預知多址干擾用戶的擴頻碼,不需預知信道參數(shù),只需已知期望用戶的擴頻碼和粗略的定時,就可以完成用戶的盲檢測.同時,該接收機通過降維自適應去相關濾波和基于判決指導的自適應多徑合并,來獲得低成本和良好的抗衰落、抗遠近效應性能.仿真結(jié)果驗證了本文提出的接收機的優(yōu)良性能