原有的單位要換算成的單位應(yīng)乘以square inches平方英寸square centimetres平方厘米6.451 6square feet平方英尺square metres平方米0.092 903square yards平方碼square metres平方米0.836 13square miles平方英里square kilometres平方公里2.589 99square miles平方英里acre...[繼續(xù)閱讀]

    原有的單位要換算成的單位應(yīng)乘以cubic inches立方英寸litres升(公升)1.638 71×10-2cubic feet立方英尺litres升28.316 9cubic feet立方英尺cubic metres立方米0.028 32cubic yards立方碼cubic metres立方米0.764 56gallons(Brit.)加侖(英)cubic metres立方米4.546 09×10-3li...[繼續(xù)閱讀]

    原有的單位要換算成的單位應(yīng)乘以pounds磅kilograms千克(公斤)0.453 592pounds磅tons噸4.53592×10-4long hundredweights長(zhǎng)擔(dān)kilograms千克50.802 345short hundredweights短擔(dān)kilograms千克45.359 237long tons長(zhǎng)噸kilograms千克1 016.046 9long tons長(zhǎng)噸tons噸1.016 046 9short tons短...[繼續(xù)閱讀]

    原有的單位要換算成的單位應(yīng)乘以calories卡路里joules焦耳4.186 8calories卡路里kilowatt hours千瓦小時(shí)1.163×10-6calories卡路里British thermal units英熱單位3.968 31×10-3kilowatt hours千瓦小時(shí)joules焦耳3.6×106kilowatt hours千瓦小時(shí)calories卡路里8.598 45×105...[繼續(xù)閱讀]

    Derived units are formed by combining base units. Velocity forexample (distance divided by time) has units of metres per second(ms-1 or m/s). Certain units have their own special names andsymbols as shown.導(dǎo)出單位是通過基本單位的組合而形成的。例如速度(距離除以時(shí)間)的單位...[繼續(xù)閱讀]

    The units are used with prefixes in front of the word to denotemultiples or submultiples of 10. For instance,centi-indicates 10-2(0.01),so 1 centimetre (1 cm)is 0.01 metre.kilo- denotes 1 000,so 1 kilometre (1 km) is 1 000 metres. Note that the unit of ma...[繼續(xù)閱讀]

    The primary symbols are I1,V5,X10,L50,C100,D500,M1 000.最基本的符號(hào)是I,V,X,L,C,D,M,分別表示阿拉伯?dāng)?shù)字1,5,10,50,100,500,1 000。羅馬阿拉伯羅馬阿拉伯羅馬阿拉伯ⅠⅡⅢⅣⅤⅥⅦⅧⅨⅩXVXIXXXXXVXXIXXXXXXXV1234567891015192025293035LXLXVLXIXLXXLXXVLXXIXLXXXLXXXVLXXXIXX...[繼續(xù)閱讀]

    氫hydrogen(H)鈹beryllium(Be)氮nitrogen(N)氖neon(Ne)鋁aluminium(Al)硫sulphur(S)鉀potassium(K)鈦titanium(Ti)錳manganese(Mn)鎳nickel(Ni)鎵gallium(Ga)硒selenium(Se)銣rubidium(Rb)鋯zirconium(Zr)锝technetium(Tc)鈀palladium(Pd)銦indium(In)碲tellurium(Te)銫caesium(Cs)鈰cerium(Ce)钷pr...[繼續(xù)閱讀]

    APPEND 裝入文件命令A(yù)SSING 指定驅(qū)動(dòng)器命令A(yù)TTRIB 設(shè)置文件屬性命令BACKUP 后備文件命令BREAK 中斷命令CHCP 轉(zhuǎn)換代碼頁(yè)面命令CHDIR (CD) 改變目錄命令CHKDSK 檢查磁盤命令CLS 清除屏幕命令COMMAND 設(shè)命令處理器命令COMP 比較文件命令COPY 復(fù)制文件...[繼續(xù)閱讀]

    All specified files are contiguous執(zhí)行CHKDSK命令。所指定的文件是連續(xù)寫在磁盤上的。All location error for file,size adjusted執(zhí)行CHKDSK命令。在文件位置表中發(fā)現(xiàn)了一個(gè)無(wú)效扇區(qū)號(hào),該文件從最后一個(gè)有效扇區(qū)之后被截去。Attempted write protect violat...[繼續(xù)閱讀]