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- When the rf pulse is combined with magnetic field gradients, a spatially encoded signal is produced that can be detected and translated into images. 當射頻脈沖與磁場(chǎng)梯度聯(lián)合起來(lái)時(shí)，我們可以探測到一個(gè)空間編碼信號的產(chǎn)生并且將它轉變成圖像。
- In these nonuniform fields the coil voltage caused by the excitation of an RF pulse rapidly decays to zero, but it can be recovered some time later by applying a second pulse. 在不均勻磁場(chǎng)內，射頻脈沖導致的電波很快會(huì )消失，但如果隔一段時(shí)間后再提供第二次脈沖，又會(huì )重新出現。
- For example, when a surface coil is used to transmit a rectangular RF pulse into a uniform water phantom, the amplitude of the B1field can vary by several-fold across the imaged object. 比方說(shuō)，當一個(gè)表面線(xiàn)圈向均勻的水介質(zhì)發(fā)射矩形射頻脈沖的時(shí)候，B1 場(chǎng)的振幅有可能在成像物體的不同部位發(fā)生很大的差異。
- Pulse Envelope Correlation Air Navigation 脈沖包線(xiàn)相關(guān)空中導航
- With such short pulses, it is important to be able to control the precise relation between the individual oscillations of the electric field (the carrier wave) and the pulse envelope. 脈沖這麼短時(shí)，精確控制電場(chǎng)（載波）的單一振蕩和脈沖包絡(luò )線(xiàn)之間的關(guān)系就顯得很重要。
- A New Method for Measuring the Stability of RF Pulse Series 一種測量射頻脈沖序列穩定性的新方法
- Have you stuck down the back of the envelope? 信封背面開(kāi)口處貼牢了嗎？
- He steamed the stamp off the envelope. 他用蒸汽把信封上的郵票揭下來(lái)。
- He glued a stamp onto the envelope. 他把郵票貼在信封上。
- An unwanted false electronic pulse. 一種不希望有的假電子脈沖。
- As he picked up the envelope, a key dropped out. 他揀起信封時(shí)，一把鑰匙掉了出來(lái)。
- As she picked up the envelope, a key dropped out. 她拾起信封時(shí)，一把鑰匙掉了出來(lái)。
- Put a stamp on the envelope, will you? 在信封上貼張郵票，好嗎？
- He stuck a stamp on the envelope. 他在信封上貼上郵票。
- Direct Digital Synthesized RF Pulse System For Nuclear Magnetic Resonance Based On NCO And DSP 基于NCO與DSP的核磁共振直接數字合成射頻脈沖系統
- She opened the envelope with her fingertips. 她用指尖弄開(kāi)了信封。
- The envelope's seal was torn open. 信封封緘被撕開(kāi)了。
- The (flap of the) envelope was unstuck. 信封(的封口)沒(méi)粘住。
- The Requirement of Short Term Frequency Stability of RF Pulse Train for COR, MTI, and MTD Radar COR、MTI、MTD雷達對射頻脈沖序列頻率短穩的要求
- There are several enclosures in the envelope. 信封內裝有幾份附件。
