他也是杰出的素描家和 铜版画 家.He was a sketcher and a copper - plate engraver .蚀刻画 、 铜版画 、 平版画以及雕刻构成了他书画刻印的作品.The etchings, drypoints, lithographs , and engravings together formed his graphic work.他将铜版画浸入到酸性溶液中.She soaked the etching...
辐照后,氢气退火的样品在200 ～ 500nm波段透过率显著降低.The transmittance of the YSO H _ 2 - annealed obviously decreases after radiation in the 200 - 500 nm spectral ranges.浮法玻璃退火的目的是消除或减小玻璃中的热应力.The purpose of float glass annealing is to red...