您要查找的是不是：
- observing Rn instrument 测氡仪
- The stethoscope is a medical instrument. 听诊器是一种医疗器械。
- In the picture a man is seen observing a meter. 你在图中可以看见一个人在观察仪表。
- This instrument monitors the patient's heartbeats. 这台仪器监听病人的心跳。
- The police have been observing his movements. 警方一直监视着他的一举一动。
- She sat observing his face in profile. 她坐着从侧面观察他的脸。
- The king signed the instrument of abdication. 国王签署了逊位的文告。
- A similar board used as a percussion instrument. 敲击板用作打击乐器的一种类似的板
- The act or a period of observing; surveillance. 观察; 警戒观察或监视的行为或时间
- This scientific instrument suffered severely. 这部科学仪器受到严重损坏。
- Language is an instrument for communication. 语言是交际的手段。
- The compass is an instrument of navigation. 罗盘是航行仪器。
- The bagpipe is a sweet musical instrument. 风笛是一种听起来很悦耳的乐器。
- The viola is a stringed instrument. 中提琴是一种弦乐器。
- Can I have more than one RN number? 一家公司可以拥有多个RN代码吗?
- No. We assign only one RN number per company. 不可以。一家公司只可以有一个RN代码。
- A telegraphic sending instrument. 发报器电报机中发射信号的仪器
- How long does it take to get an RN number? 多长时间就可以得到RN代码?
- Made with or as if with a sharp instrument. 割开的用或好象用利器制成的
- Eren Berber,Nora L,Flesher RN,et al. 吴沛宏，李立，张益民。
