flash vt. 1.使閃光,使閃爍;反照,反射 (back)。 2.晃;迅速傳達出去,拍出,發出(電報等)。 3.使閃現;把(發亮的東西)晃一下,亮出一下;使掠過(心頭) (into; upon)。 4.灌水使(船)浮過障礙物,用水突然灌注。 5.〔口語〕炫耀,賣弄。 6.將(玻璃)展成薄片;給(玻璃)鑲蓋。 7.給(房頂)加覆蓋物。 flash a glance [a look, one's eyes] at 用眼瞟一下,看一眼。 The news was flashed across [over] the country. 消息閃電般傳遍全國。 His eyes flashed defiance. 他眼中顯現出反抗的神色。 vi. 1.(電光等)一閃;(火藥等)忽然燒起來 (off out up) (刀等)晃一晃。 2.忽然顯現,突然出現 (forth in out)。 3.忽然想起;(機智、才能等)突然顯現。 4.飛馳,掠過。 5.(河水等)沖瀉,泛濫,暴漲。 6.〔美俚〕(服迷幻藥后)感到恍恍惚惚。 flash by 一閃而過的。 flash it away 〔俚語〕炫耀,招搖。 flash on 1. 立刻心領神會。 2. 〔美俚〕(服迷幻藥后)感覺飄飄然。 flash one's stuff 【美體】顯出本領。 flash out [up] 勃然發怒。 flash upon 閃現心頭,掠過心頭,忽然想起。 n. 1.閃光,閃發,煥發。 2.剎那,一瞬間。 3.浮華,浮夸,華而不實;衣飾漂亮的人。 4.灌注的水,堰閘。 5.【攝影】閃光,閃光燈下攝成的照片。 6.速報,急報,簡短電訊。 7.惹人注目的東西[人物]〔尤指優秀動員〕。 8.【軍事】徽章,肩章。 9.(混合酒的)色料。 10.(盜賊等的)隱語,黑話。 a flash of hope 一線希望。 flash of lightning 閃電。 flash of merriment 剎那的歡樂。 flash of wit 靈機一動,突然出現的機智。 a flash in the pan 空槍;曇花一現(的人)。 in a flash 即刻,一剎那間。 adj. 1.閃光的,閃耀的,一閃而過的。 2.浮華的,浮夸的,華而不實,假的。 3.盜賊的,流氓的。 4.〔俚語〕(旅館等)高級的。 5.火速的;暴漲的。 6.(相機)帶有閃光設備的。 flash language 隱語。 flash money [note] 假錢[鈔票]。
Standard test method for thermal diffusivity of solids by the flash method 閃光法測定固定導熱性的標準試驗方法
Method for measuring thermal diffusivity of metals by the laser flash method 用激光閃爍法測量金屬的熱擴散性的方法
Determination of thermal diffusivity of continuous fiber - reinforced ceramic matrix composites by the laser flash method 用激光閃爍法測定連續纖維增強陶瓷基體復合物的熱擴散性
Test methods of thermal diffusivity , specific heat capacity , and thermal conductivity for fine ceramics by laser flash method 激光閃爍法測定精細陶瓷的熱擴散率比熱容量熱傳導率試驗方法
In this paper , firstly , monolithic materials cosb3 and bi2te3 were prepared by sparkle plasma sintering ( sps ) respectively , and at the same time the microstructure of cosb3 and bi2te3 were studied by sem ; the seebeck coefficients and electrical conductivities of monolithic materials were measured by standard - four - probe method ( ulvac zem - 700 ) in a he atmosphere simultaneously , and their thermal conductivities were investigated by laser flash method ( tc - 7000 ) in vacuum . secondly , the junction temperature of graded bi2te3 / cosb3 thermoelectric materials was optimized based on the thermoelectric transport properties of monolithic materials , also when graded materials were used in the temperature difference ranging from 300k to 800k , the length ratio of monolithic materials cosb3 and bi2te3 were optimized in theory . thirdly , graded bi2te3 / cosb3 thermoelectric materials were prepared by two - step sps sintering , and the relationship between its average seebeck coefficients and temperature were calculated by theory mo del 均質材料cosb _ 3和bi _ 2te _ 3的電導率和seebeck系數采用標準四端子法于he氣氛下在zem - 1上同時進行測量;熱導率采用激光微擾法( tc - 7000 )于真空狀態下進行測量;其次,在對均質材料cosb _ 3和bi _ 2te _ 3熱電傳輸特性研究的基礎上,對結構梯度bi _ 2te _ 3 cosb _ 3熱電材料的界面溫度進行了優化;為了使結構梯度bi _ 2te _ 3 cosb _ 3熱電材料在300k至800k的溫度范圍內具有最佳的熱電性能,本研究同時對梯度結構熱電材料當中均質材料cosb _ 3和bi _ 2te _ 3材料的長度進行了優化設計;第三,通過兩步放電等離子燒結的方法制備出了結構梯度bi _ 2te _ 3 cosb _ 3熱電材料;采用理論計算的方法研究了梯度結構熱電材料平均seebeck系數和溫度的關系;同時為了驗證設計的結果,本論文對結構梯度bi _ 2te _ 3 cosb _ 3熱電材料的開路輸出電壓和熱端溫度之間的關系及梯度材料在300k至800k的溫度范圍內使用時的功率輸出進行了相應的研究。