performance n. 1.執(zhí)行,實(shí)行,履行;完成;實(shí)現(xiàn);償還。 2.行為,動(dòng)作,行動(dòng);工作。 3.性能;特性。 4.功績(jī);成績(jī)。 5.演奏;彈奏;演出;(馴獸等的)表演;把戲。 6.【物理學(xué)】演績(jī)。 a performance test 【機(jī)械工程】性能試驗(yàn)。 high performance 高度準(zhǔn)確,性能優(yōu)良。 an afternoon performance 午后的演出,日戲。 two performances a day 一天演兩場(chǎng)。 a fine [wretched] performance 成績(jī)好[壞]。 put a monkey through its performances 使猴子玩種種把戲。 performance in [of] horse-manship 馬戲;馬術(shù)表演。
At the basis of designing underwater geomorphological measurement system concrete plan , this dissertation makes study and analysis on its measuring depth of water sonar system and dynamic global position system . this dissertation simply and thoroughly introduces the state of underwater acoustic transducer and array . it covers the basic situation , the study benefits , the classification and role , analyses the performance index , designs the performance parameter relating to themselves performance synthesis and sonar equation 論文在制定水下地貌測(cè)量系統(tǒng)技術(shù)方案的基礎(chǔ)上,論述了該系統(tǒng)中的水深測(cè)量聲納系統(tǒng)和動(dòng)態(tài)定位系統(tǒng)( dgps ) ,分析了水聲換能器及基陣的性能指標(biāo),確定了換能器及基陣的主要性能參數(shù)。