reduce by a factor of 3 to 4怎么翻译

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• 英语翻译请翻译一下下面的说明书,这是一个比色仪的英文说明书.1.fill the cuvet with 10ml of unreacted sample up to the mark and replace the cap .2.place the cuvet into the holder and ensure that the notch on the cap is positioned securely into the groove .3.Press ZERO and “sip” will appear on the display.4.Wait for a few seconds and the display will show “-0.0-”.Now the meter is zeroed and ready for measurement.5.remove the cuvet.6.add the content of one packet of HL 93701 DPD reage
• 英语翻译Figure 1:The conduction system of the heart 2.Figure 2:Experimental setup.Refer to Figure 4 for a zoomed in picture of the recording region.Figure 3:Pulse-echo of the 540kHz transducer off a flat air/water interface
• 1.--我要去剧院看表演.--I’m going to see a play in the t( )2.--我的衣服怎么样?--What do you think of my c( ).---嗯,看上去很完美.--Well,they look p( )3.你的脚怎么了?---What‘s the matter with your f( )4.因为我的鞋是五码的.Beacause my shoes are s( ) five.
• 英语翻译1.the forbidden city 2.the three gorges3.the bund 4.shanghai botanial gardens
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• 1.Few of them enjoyed ____ the cabbage in vinegar,but Caption Cook insisted ___ from the time they went abroad.A.eating;they do B.to eat;they should doC.eating;on doing D.to eat;on them doing(答案是A,我认为第一空填eating第二空填on them doing(insist on...) 望高手指点一二说出为什么)2.There is a well-equipped laboratory ___ the woods.A.along B.dowm C.cross D.beyond请问这句话怎么翻译?（超越了森林?3.It's very important ___ us ___ English well.A.of;learning B.for;learning C.of;learn D.for;to learn
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• 已知f（x+1）=x²-4,在递增的等差数列{an}中,a1=f（x-1）,a2=-3/2,a3=f（x）（1） 求x的值；令t=x+1,则x=t-1,得f（t）=（t-1）²-4.,即f（x）=（x-1）²-4（这一步怎么得到的呢?）我是问f（x）=（x-1）²-4（这一步怎么得到的呢？）
• 求函数的极值：f(x,y)=x^3+8y^3-6xy+5答案是这个：f(1,1/2)=4 问是怎么得出来的！是用求导作
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• 英语翻译