您要查找的是不是：
- figure-eight directional microphone 8字形方向性话筒
- figure-of-eight directional microphone “8”字型传声器
- single-tube directional microphone 单管指向性传声器
- Hydrophone Underwater directional microphones for passive sound detection. 水听器,具有方向性的水下麦克风,用于被动接受声音。
- This work has been focused on the use of copper(I)-mediated anti-SN2’ allylic substitution reactions with non directing leaving groups. 论文提要内容： 在变化的经营环境当中，为了生存和发展，组织必须更灵活、弹性地加以应对。
- non directional current protection 非方向电粒护装置
- Non Directional Radio Homing Beacon 无方向性无线电归航信标
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- The diplomat was declared persona non grata. 这位外交家被宣布为不受欢迎的使节。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- He is declared personal non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- He has chosen the most direct route. 他选取了最直的路线。
- I had had a few beers and was completely non compos mentis. 我喝了些啤酒就头昏脑胀了。
- She's very direct, believes in speaking her mind. 她为人直率，喜欢有什么说什么。
- Can you direct me to the shoe department? 请告诉我卖鞋部在哪里。
- He was declared persona non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
- Be there a direct train for Beijing to Nanning? 从北京到南宁有直达车吗？
- Direct the DSAS's microphone towards the source of sound. 指令员的麦克风对源头的声音。
