Compared with pounding to pieces by mortar, this method is simple, needing less material and reducing the probability of RNA fall.
与研钵研磨材料比较,此方法简便、需要材料少、降低了提取过程中RNA的降解几率。
A smaller house will require less material to build, as well as less energy to heat and cool over the entire life of the structure.
一个较小的房子将需要更少的材料建造,以及较少的能量来加热和冷却对整个生命的结构。
As these films use less material they are cheaper to produce, not least because they can be deposited on bases like metal, glass and plastic.
因为这些薄膜使用较少的原料,从而使得它们的生产成本更低。同样重要的是,它们可以被装配在诸如金属、玻璃和塑料等基底之上。
A farmer could save on wood or stone with a round design that needed less material than traditional barns.
VOA: special.2009.12.29
So for some you that are less interested in maybe the physical structure of an individual atom, now some more exciting material for you might be coming up if you like to think about how, instead, molecules behave, either within bonding, within themselves, or with other molecules, that's what we're going to be heading to in this next unit.
那么对于某些同学,你们或许不感兴趣,对于单个原子的物理结构,现在可能有令你感到兴奋的内容,要出现了,如果你更喜欢思考,分子的行为,或者是关于成键的,或者是关于它们本身的,又或者与其它分子之间的行为,这些将是我们下个单元要讲的内容。
You can go to any one of these times more comfortable, less comfortable, somewhere in between, and the focus of these sections will be on the material cover this week as well as potentially the start of next week and with a focus on problem set 1, which is the second problem set, 0 index which will go out via PDF this weekend.
只要你乐意,上哪堂课都可以,这些课程不仅覆盖了本周的学习内容,也可能囊括了,下周要学习的知识,请大家把注意力集中到我们的第二本习题集--习题集1上,这周末会以PDF格式发布出来。
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