瞬變發射 的英文怎麼說
中文拼音 [shùnbiànfāshè]
瞬變發射
英文
transient emission-
In analyzing the neutron active detection, the neutron multiplication in the nuclear warheads induced by outer neutron source with different neutron energys is studied with numeral simulation, and the feasibility of through counting neutrons to determine the presence of high enrichment uranium ( heu ) in nuclear warhead has been proved. the method of detecting the warhead which contains heu pit by counting the released neut rons whose energy is higher than that of source neutron is studied. the feasibility of this method has been studied
對幾種主動探測核彈頭方法進行的研究中，首先對不同能量各向同性外源中子照射核彈頭的中子增殖行為進行了數值模擬，檢驗了用外源中子照射核彈頭后，通過測量瞬發中子在核彈頭中的增殖量，來證明核彈頭中高濃鈾存在的可行性；研究了用能量低於1mev的外中子源照射核彈頭，用測量核彈頭中裂變產生的高於源中子能量中子數的方法探測核彈頭，通過數值模擬分析了可行性。Gamma ray bursts are high - energy transients in the gamma ray portion of the elctromagnetic spectrum that seem to be isotropically distributd in the sky
珈瑪射線爆發是一種在天空中呈現等向分佈之電磁波中珈瑪射線部分的高能瞬變。Transient electromagnetic methods ( tem ) can be called as time domain electromagnetic methods. the exploration equipments of tem include two units : transmitter and receiver. emission current falls down from i to 0 suddenly when step current passes through the transmitter loop
瞬變電磁探測需要發射的電流激勵信號要足夠強、功率足夠大，發射電流波形的關斷時間要求比較苛刻，而且發射部分還需提供實時監測發射電流、關斷時間，記錄電流下降沿等功能。So far, existing brain function evaluation techniques includes electroencephalogram ( eec ), magnetoencephalogram ( meg ), positron emission tomography ( pet ), functional magnetic resonance imaging ( fmri ) etc. among them, the technique using event - related potential ( erp ) contained in eeg features high temporal resolution, low costs and convenient application
到目前為止，探測大腦活動的方法有eeg （腦電圖） ， meg （腦磁圖） ， fmri （功能磁共振成像） ， pet （正電子發射斷層掃描）等。其中利用包含在eeg中的erp （事件相關電位）進行的研究，能達到毫秒級的高時間解析度，而且器械成本低應用方便，對探索人腦瞬息萬變的信息處理機能（認知機能）無疑是很有幫助的一項技術。It can be seen from the deformation courses of the tubes that the local dents firstly occur at the beginning of impact. with the growth of the dents, the stiffness decreases, and the rigid - body translations and the whole deformations take place. the initial kinetic energy of the missile decreases rapidly to approximate zero during the course of impact, and the energy is transferred to internal energy and kinetic energy of the tube
同時，也得到了一些實驗中沒有觀察到的現象：從模擬的管梁的變形歷程可以看出，在沖擊瞬時，管梁先發生局部凹陷，隨著局部凹陷的加大，管梁的抗彎剛度減小，然後太原理工大學碩士學位論文剛體平動和整體變形發生，而且速度越大，這種現象越明顯;子彈的入射動能在撞擊過程中急劇減小，撞擊結束后減小到可以忽略不計。The corresponding variation of olltput voltage due to the change of total laser intensity is measured by a photo detector. a displacement - time curve can be obtained by calibrating the re1ationship between block position and output voltage of the photo detector. through the use of simple mathematical operation, the bird - shell velocity and acceleration histories can be determined, and therefore the bird - shell instantaneous velocity at any points within the measurement range can be obtained
該系統發射的一片狀激光受運動鳥彈的依次阻擋后，相應的光強度變化將被測出並轉換為位移時間曲線，經過簡單的數學運算，該系統能用來確定鳥彈速度和加速度的時間歷程，因而可確定鳥彈在被測區域內任一點的瞬時速度。According to practice of transient electromagnetic operators, this paper will introduce a new multi - aperture transient electromagnetic method integrating a lot of simulation experiment data on the base of its primary theory and transmission rule. in the end, result shows this new method can improve so much direction of electromagnetic field that it increases lognitudinal resolving power
本論文根據瞬變電磁法勘探工作者的實踐，利用電磁波運動學特徵在討論其基本原理和電磁波傳播規律的基礎上，結合在論文過程中進行的大量模擬實驗資料，進一步引入了多孔徑瞬變電磁發射場源，實驗結果分析證明採用瞬變電磁多孔徑發射場源改善了輻射場的方向性，提高了瞬變電磁法勘探的垂向分辨力。For investigating thermal character changing of matter with shock compression, we need to measure the time character of radiating spectrum of matter with shock compression and its temperature, that is to measure transient time - resolved spectrum and its temperature
為了研究沖擊加載下物質熱特性的變化，需要測量沖擊壓縮態物質所發射脈沖熱輻射光譜及溫度的時間特性，即進行瞬態光譜的時間分辨測量及溫度解析。分享友人