下面雅思为大家整理了雅思流程图9分范文及考官点评：砖块的制作，供考生们参考，以下是详细内容。
WRITINGTASK 1
Youshouldspendabout 20 minutesonthistask.
Thediagrambelowshowstheprocessbywhichbricksaremanufacturedforthebuildingindustry.
Summarisetheinformationbyselectingandreportingthemainfeatures, andmakecomparisonswhererelevant.
Writeatleast 150 words.
Brickmanufacturing
Clay: typeofstickyearththatisusedformakingbricks, pots, etc.
【满分范文】
Theprocessbywhichbricksaremanufacturedforthebuildingindustrycanbeoutlinedinsevenconsecutivesteps. Firsttherawmaterial, clay, whichwasjustbelowthesurfaceofsoilincertainclay-richareashastobedugupbyadigger.
Thenthelumpsofclayareplacedonametalgridinordertobreakupthebigchunksofclayintomuchsmallerareas, whichfallthroughthemetalgridontoaroller, whosemotionfurthersegregatesthebitsofclay. Sandandwaterareaddedtomakeahomogenousmixture, whichistheneitherformedinmouldsorcutintobrick-shapedpiecesbymeansofawirecutter.
Thosefreshbricksarethenkeptinadryingovenforatleast 24 andamaximumof 48 hours, severaldozensifnothundredsofbricksatatime. Thedriedbricksarethentransferredtoaso-calledkiln, anothertypeofhightemperatureoven. Firsttheyarekeptatamoderatetemperatureof 200 ℃ -1300 ℃ . Thisprocessisfollowedbycoolingdownthefinishedbricksfor 48 to 72 hoursinacoolingchamber.
返回查字典首页>>