海量图书期刊资源，随时随地畅享阅读乐趣
Kilometre and centimetre Earth strainmeter.-Long strainmeters for measuring strains near the Earth's surface are described : 2F, 7R. NATURE, V249, N542, MAY. 1974, P25–26R.G. Bilhan; G.C. King; D. Emter · 1974