acetal什么意思？

acetal的音标：acetal的英式发音音标为：['æsɪtæl]acetal的美式发音音标为：['æsəˌtæl]...

The necessary material of 2 - ( 2 - methoethyl ) acetaldehyde diethyl acetal was synthesized in addition.另外还合成了必需原料 2- ( 2- 甲氧基乙氧基 ) 乙醛二乙醇缩醛.Butyraldehyde 1,2 propanediol acetal was synthesized by using stannous chloride...

Butyraldehyde 1,2 proparediol acetal was synthesized by using stannous chloride as catalyst.以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.Butyraldehyde 1,2 propanediol acetal was synthesized by using stannous chloride as catalyst.以非质子...

n.马蝇，牛蝇，牛虻...

Normans的音标：...

n.废物，废话，排泄，排泄物vi.掷骰子，拉屎，〈俚〉放弃计划（等），〈俚〉休息，打盹...

whiskey的音标：whiskey的英式发音音标为：['wɪskɪ]whiskey的美式发音音标为：['hwɪski]...

这件外衣已经穿旧了.The coat is worn threadbare.这个活儿有点脏，你需要穿旧衣服。As the work tends to be a bit messy you'll need to wear old clothes.她站在那里，身穿旧外套，头戴羊皮帽，脸上脏兮兮的。She stood there in the old coat and woollen cap, her face smudged wi...

将混合物打成泥状，然后用滤网滤一下。Liquidize the mixture and then pass it through a sieve.如果提前几个小时就准备好了，混合物可能会分离开。If prepared many hours ahead, the mixture may separate out.将混合物拧成一段段的香肠，不要把皮弄破。Twist the mixture into individual sausages w...

At first, the thesis describes the fluid and acentric narrative mode.首先, 文章阐述的是流动性、去中心的叙事方式.The vacuum degas unit consists of vacuum degas machine, vacuum pump and acentric pump.真空脱气机组包括真空脱气机 、 真空泵及离心泵.It is recycling ma...

leaser的音标：leaser的英式发音音标为：['li:sə]leaser的美式发音音标为：['lisə]...

n.内隔壁...

heteratisine的音标：heteratisine的英式发音音标为：[hetərə'tɪsi:n]heteratisine的美式发音音标为：[hetərə'tɪsin]...

The Raleigh International Bike Ride is open to anyone who wants to raise money for a good cause.想要为公益事业筹集资金的人都可以参加雷利国际自行车比赛。Gilbert's half brother Sir Walter Raleigh continuted in his work.吉尔伯特同母异父的弟弟沃尔特?雷利继承了他的事业.S...

squeals的音标：...

wile的现在完成时为：wiled...

n.屈光检查计，眼折光计...

n.（发射宇宙飞船等的）倒数读秒，倒计时( countdown的名词复数 )，大事临近的时期...