资讯

WHILE engaged in tests on the ‘ageing’ of the permittivity of a sample of ceramic barium titanate ... whereas the normal permittivity curve has, of course, a high positive slope just below ...
The study, conducted by Censuswide in March, revealed more than half (51%) of Americans think stomach issues such as bloating, gas and discomfort are normal. Of the 2,000 people surveyed ...