《生物医学工程专业英语》Unit 7 Ultrasound.pptVIP

Ultrasound Oct 24th, 2014 New words abdominal 腹部的，腹腔的 heartbeat 心跳 adjustable 可调整的 ill effect 副作用，不良后果 area of interest 感兴趣区 magnitude 量值，大小 attainable 能达到的 occlusion 闭塞，阻塞 audible 听得见的，可闻的 organ 器官，机构 burglar alarm 防盗报警器 phase 相位，调整相位 constructively 建设性地，增强地 probe 探索，探针，探查 diagnostics 诊断学 propagate 传播，宣传 directional 定向的，有方向性的 reflector 反射物（体） Doppler shift 多普勒频移 rule of thumb 凭经验的 fetal 胎儿的 speaker-microphone 同时用作发射和接收的探头 follow-up 随访的，后续的，追踪报道 superimpose 叠合，重叠，叠加 foreign object 异物 ultrasound 超声 gigahertz 吉赫兹（109Hz） untold 未说过的，未透露的，数不清的 Notes 1. up to (Line 4)常用的意义有三个： a) (adj.) used to say that something is less than or equal to but not more than a stated value, number or level Up to two hundred people were on board the ship. We can teach dancers up to intermediate level here. b) (prep.) UNTIL Up to yesterday, we had no idea where the child was. c) (prep.) RESPONSIBILITY to be the responsibility of someone Its up to the manager to make the final decision. Notes 2. range (Line 7): If things range between two points or range from one point to another, they vary within these points on a scale of measurement or quality. They range in price from $3 to $15. ...temperatures ranging between 52C and 202C. 3. phase (Line 27): 控制（调整）相位，简称相控。在电子学中相控是指一种在传感器中通过控制传感器不同发射/接收单元信号的时间延迟来控制传感器不同单元发射/接收端振动相位，从而实现在特定方位增强信号的技术。如phased array（相控阵列）。 Notes 4. Higher-frequency ultrasound would allow greater detail, but it does not penetrate as well as lower frequencies do (Lines 39-40).更高频率的超声波儿科发现更小的细节，但穿透力不如低频超声。本句中allow greater detail之后可理解为省略了to be revealed，最后一个单词do指代penetrate。 5. Sound is most strongly reflected at places where density changes are greatest.(Lines 49-50)：此处greatest表示“非常大”，它和“most”均属于没有“最”含义的绝对最高级，注意它们前面不带定冠词。例如 It is a most useful book. Notes 6. Doppler shifted (Line 58): 多普勒偏移（频移）的，名词Doppler在此做状语。还例如 The device is water resistant. The coefficient is temperature dependent. Small transistorized equipment is often battery powered. 7. somewhat (Line 67): you use