buffer n. 1.【機(jī)械工程】緩沖器,緩沖墊;阻尼器,減震器;消聲器。 2.【化學(xué)】緩沖,緩沖劑。 3.緩沖者;緩沖物;緩沖國(= buffer state〕。 4.〔計(jì)算機(jī)〕緩沖存儲(chǔ)裝置。 oil buffer【機(jī)械工程】油壓減震器。 vt. 1.【化學(xué)】用緩沖劑處理。 2.緩和;緩沖;保護(hù);使不利影響減少。 buffer economy by raising interest rates 以提高利率來保護(hù)經(jīng)濟(jì)。 The drug buffer-ed his pain. 這劑藥減輕了他的病痛。 buffer2 n. 1.【機(jī)械工程】拋(光)盤,拋光輪,拋光棒。 2.拋光工人。 n. 1.〔英俚〕無能的人,老派人物。 2.家伙,人。 3.【航?!克諿掌帆]長副手。 He was a bit of buffer. 他有點(diǎn)低能。 an old buffer 老家伙,老糊涂,老朽。
Abstract : the method of using formaldehyde buffer solution a b sorption - hydrochloric pararosaniline spectrophotometry to determine sulfur diox ide in air has higher sensitivity and good selectivity , and prevents from adoptin g mercurial absorbent . but the conditions in lab are not well controlled , the v alue of reagent blank and standard curvilinear slope can ' t accord with the one s tipulated in “ methods for air and waste gas monitoring and analysis ” . some opra tional techniques for so2 determination in lab are introduced for reference 文摘:以甲醛緩沖溶液吸收-鹽酸副玫瑰苯胺分光光度法測定空氣中的二氧化硫,方法靈敏度高,選擇性好,避免了使用含汞的吸收液,但如果實(shí)驗(yàn)條件控制不好,試劑空白值及標(biāo)準(zhǔn)曲線的斜率就會(huì)不符合《空氣和廢氣監(jiān)測分析方法》中規(guī)定的值,本文著重從操作技巧方面對二氣化硫測定的實(shí)驗(yàn)室質(zhì)量控制進(jìn)行分析,僅供參考。
In the view of hydrolyze coating way , ph value , treating temperature , concentration of premonitory matter solution , buffer solution amount and premonitory matter amount affect the coat layer forming mainly . according to the results of experiments , the best technical condition is that ph = 6 . 5 , [ al3 + ] = 0 . 064mol / l , t = 343k , vbugersoiution = 40ml 水解包覆工藝改性研究結(jié)果表明: ph值,處理溫度,覆層前驅(qū)物溶液的濃度、緩沖溶液加入量和覆層前驅(qū)物加入量這幾個(gè)因素對石墨表面覆層形成存在重要影響。
A buffer is an aqueous solution consisting of a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid. Its pH changes very little when a small amount of strong acid or base is added to it and thus it is used to prevent changes in the pH of a solution.