缺点 设备费用昂贵:数控加工设备的价格通常高于普通机械加工设备,初期投资较大。 技术要求高:数控加工设备对操作人员和维护人员的技术要求较高,需要经过专业培训才能熟练操作和维护。 维修不便:数控加工设备一旦出现故障,维修难度较大,且维修费用较高。 加工前准备复杂:数控加工设备在加工前需要进行复杂的准备工作,如编程...
Bond is the certificate of creditor's rights and debt, which is issued by a borrower to a bond investor and promises at a certain interest rate to pay interest and in an agreed manner to repay the principal.