硬水使壶生水垢.Hard water furs the kettle.硬水使水壶生了垢.Hard water furred the kettle.经过加入碳酸钠能被软化的硬水,称为永硬水.Hard water which can be softened by adding sodium carbonate is called permanent hard water....
The concepts of radiant emittance and of irradiance are complementary.辐射的发射强度和辐照度是两个互补的概念.Emittance and irradiance are meaningful measurements of flux at a specific surface.发射强度和辐照强度只有对一定表面上通量的量度才是有意义的.A high quality bea...
官员们对于会谈情况保持缄默.The officials maintained a wall of silence around the talks.我们不应对这件可耻的事保持缄默.We should not pass over this disgraceful affair in silence.侦探们犯了难，半岛上各个群体抱成一团，达成了保持缄默的密约。Detectives have run into a conspiracy of ...