Handheld devices are used in a variety of specific contexts.手持设备会用在各种各样的具体情境下.Vector products arise frequently in this book in a number of contexts.在本书的许多场合中经常要出现矢量积.Even seemingly innocuous words are offensive in certai...
讨论了用钒钛微合金化研制成的高抗震性能结构钢在抗震设计中的应用前景.Prospect of application of the high earthquake resistant steel containing micro vanadium - titanium in - seismic design is discussed.讨论铬微合金化对大规格高碳钢线材质量的影响.The influence of Cr microalloyi...