CR就是计算机X线摄影:用IP板代替X线胶片,但要通过扫描仪扫描,很慢。
DR是直接数字化X线摄影:图像通过探测器直接传至电脑,中间环节少,图像质量高。
DR
=Dark Red 紫红色;
Data Recorder 数据记录器;
Dead Reckoning 速度三角形定位法, 航位推算法;
Density Recorder 密度记录器;
Differential Relay 差动继电器;
Discharge Resistor 放电电阻器;
Discriminating Radar 识别雷达;
Displacement Corrector 位移校准器;
Distant Range 远距离;
Distant Reading 遥测读数;
distributor;
Doppler Radar 多普勒雷达, 活动目标显示雷达
dr
=debtor;
degree;
degree of resilience 弹性度;
CR
=Calling Rate 呼叫率;
Capacitance-Resistance 阻容;
Card Reader 读卡机;
Carrier Repeater 载波增音机;
Cathode Ray 阴极射线;
Chemistry Research 化学研究;
Classification Research 分类法研究;
Coherent Rotation 相干转动;
Cold Rolled 冷轧的;
Common Return 公共回线;
Compression Ratio 压缩比;
Continuous Rating 连续定额(功率);
Contract Requirement 合同要求;
Control Register 控制寄存器;
Controlled Rectifier 受控整流器;
Conversion Ratio 转换系数, (核燃料)再生系数;
Counting Rate 计数率