Development of such distributed feedback heterostructure lasers requires crystal growth on corrugated layers.研制这种分布反馈双异质结构激光器要求在皱折层上生长出单晶层.We produce metal plates and corrugated sheets in different thicknesses.我们生产不同厚度的金...
含碳的铌合金,若在高温下受氧沾污,易产生脱碳现象.In niobium alloy containing carbon occurs decarburization in case of contamination by oxygen at higher temperature.含%碳的钢(铁碳混合物的低共熔点),含%碳的碳钢是纯珠光体.A mixture of ferrite cementite forming distinct la...