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1.University of Michigan：密歇根大学。建校于1817 年，是美国名列前茅的公立大学，拥有优良的师资和顶尖的商学院、法学院、医学院和工学院。 2. heat load：热负荷 3. magnetic moment：磁矩 4. optical rectification：光学校正 5. doctoral student：博士生 6. positive and negative charges：正电荷与负电荷 7. shone through：shone是shine的过去式。shine through是通过。 8. an intensity of 10 million watts per square centimeter：每平方厘米一千万瓦特的强度 9. incoherent light：非相干光 10.Its already made in bulk：它已大量生产。in bulk 是大量，成批。 练习： 1.A microscope B instrument C fiber D battery 2. A modifications B effects C applications D results 3. A frequently B privately C previously D formally 4.A Under B At C On D Over 5.A light B electricity C chemical D magnetism 6.A plant B equipment C source D line 7.A down B up C together D apart 8. A this B that C those D it 9. A material B lens C meter D detector 10.A produce B convey C use D conduct | 
