采用磁控溅射法制备锰铜薄膜,溅射和真空蒸发法制备镱薄膜.Thin film manganin gages and ytterbium gages were fabricated by magnetron sputtering.用磁控溅射低温沉积镀膜技术制做锰铜薄膜,能够保持薄膜中锰、铜、镍成份的相对稳定和锰铜合金正六面三元固溶体金相结构的特性.Magnetically controlled cathod plasma sputterin...
The Monarch Butterfly breathes through its wings and female Monarchs have thicker wing veins.帝王蝶通过翅膀呼吸,雌性帝王蝶有更加厚实的翅膀脉络.Overall a monarch butterfly is no more or less striking than its host, the milkweed pod.大体上,帝王蝴蝶和其宿主奶...
Economic crises recur periodically.经济危机周期性地发生.The same old favorites recur year in year out with monotonous regularity.相同的决心以单调的规律年复一年地出现.He did not recur in thought to New York or the flat.他再也没去想纽约或者他的公寓....