Trains are thundering in and out all the time at a subway station.地铁车站上列车进进出出,整天轰隆轰隆地响个不停.Their office building was a goodish distance from the subway station.他们的办公大楼离地铁车站有相当长一段路.He walked to 50 th Street and at 10:25 we...
The sulfide assemlage consists largely of pyrrhotite, pentlandite, chalcopyrite, and pyrite.硫化物集体大部由磁黄铁矿 、 镍黄铁矿 、 黄铜矿及黄铁矿组成.Pyrite is more abundant and cobaltiferous and occurs in heavy patches in the sulfide mass.黄铁矿很多,...
Forster established the essentiality of minerals as accessory food factors required for maintaining life.福斯特证实了矿物质作为辅助食物因子在维持生命方面的重要性。Therefore , this kind of development view is not continuable in essentiality.这种发展观在本性上...
Biolar shift registers are classified as unidirectional and bidirectional.双极型移位寄存器可分为单向和双向两种.With a power - on reset functions, namely, the DAC registers reset to all zeroes.带有上电复位功能, 即把DAC寄存器复位至全零.Nevertheless, partial ...