The XRD spectra and SEM micrographs show that films are composed of nanocrystalline grains, with an average size of about 30 nm.
XRD和SEM分析表明,薄膜是由SnO2纳米晶构成的多晶薄膜,晶粒的平均尺寸大小约为30 nm。
·2,447,543篇论文数据，部分数据来源于NoteExpress
mean size
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In 1970 the average size of a French farm was 19 hectares.
1970年法国农场的平均面积是19公顷。
《柯林斯英汉双解大词典》
We calculate that the average size farm in Lancaster County is 65 acres.
我们算出兰开斯特郡的农场平均面积为65英亩。
Global Witness says trends in the number and average size of oil discoveries has been in decline since 1965.
VOA: standard.2009.10.20
It has about 102,000 employees and it says its suicide rate is about average for a company its size.
VOA: standard.2010.04.11
Both required the average size practice - one with three GPs - to open for three hours extra.
BBC: GP writing a prescription (Photo: Science Photo Library)
Mr Corrons said a botnet with 30, 000 machines in it was "about average size".
BBC: Anonymous Wikileaks supporters mull change in tactics
They are half the average size of those at some PGA Tour courses, and twice as hard.
WSJ: 2012 U.S. Open: An Olympian Effort Just to Survive
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