Heat absorbed or radiated during a change of phase at a constant temperature and pressure.

在恒定的溫度和壓強下某物質(zhì)改變狀態(tài)時所吸收或放出的熱量性爱无码视频在线观看。

When designing the step motor drive circuit of 5 phase 10 pat,89C2051 is adopted as the Loop allotter. The VMOS is adopted in power elements. It is designed as chopper-type constant current circuit.

設計五相十拍步進電動機驅(qū)動電路時選擇了89C2051作為環(huán)形分配器，而功率器件選用電壓型的VMOS管黄片大片大片大片大片大片。

Results showed that expansion coefficient exhibited anomalous behaviours, which at the -80℃ transition phase point temperature that are caused by Jahn Teller of "Ti—Ba—Ti—"on Barium Titanate, at same time, we also discussed that dielectric constant affected by the rate of vacancy on barium titanate.

結果表明在鈦酸鋇的三個相變溫度點（120℃免费一看一毛片、8℃、－80℃）處广州深圳一级毛片，熱膨脹系數(shù)反常變化免费国产乱伦视频，我們認為相變溫度為－80℃處的熱膨脹反常是因鈦酸鋇BaTiO3中對稱元"Ti—Ba—Ti"的靜態(tài)畸變造成。同時本文討論了BaTiO3中空隙對其介電常數(shù)的影響色哟哟精彩视频一区国产在线。

The rules of the cold-test characteristics changing with helix pitch are also studied and it turns out that, with increasing helix pitch, the phase velocity increases linearly, the interaction impedance changes nonlinearly and the attenuation constant decreases nonlinearly. At the same time, with the limitation of the synchronism between the electron beam and the electromagnetic wave, the change of pitch is small and therefore an approximate linear relation can be introduced.

研究表明：相速幾乎隨螺距增大而線性變大毛片-A片免费强奸，互作用阻抗與螺距是非線性的關系，衰減常數(shù)隨螺距增大而非線性地減胁俨萃尽欧美另类人妻制服丝袜；由于在維持電子注與電磁波速度同步的限制下，螺距變化的幅度不可能很大大码老熟女Av毛片免费，因此可近似按線性關系來處理互作用阻抗及衰減常數(shù)與螺距之間的關系亚洲欧洲日产国产动漫。

Pumps used for quantitative analysis should be constructed of materials inert to corrosive mobile phase components and be capable of delivering the mobile phase at a constant rate with minimal fluctuations over extended periods of time.

泵系統(tǒng)在定量分析中要能夠耐腐蝕性流動相物質(zhì)，并在較長的時間內(nèi)保持一個恒定的流速和極小的波動日韩精品肛交在线直播视频下载。

In constant torque region, the phase-independent direct torque control can be obtained by controlling the motor current of each phase without resort to vector transformation.

在恒功率運行時免费看美女的隐私，本文采用相電流相位超前反電勢的方法，利用繞組電抗電勢削弱反電勢來解決電流控制失效的問題视频一区二区国产精品，有效擴展了高速運行范圍高清影音先锋在线亚洲AV。

Kinds and selecting principle of phase shifter of the key devices in television receiving system of autotrackinging synchronous telecommunication satellite are analyzed. Transcendental equation of the propagation constant of latching ferrite phase shifter is derived, its properties are discussed.

分析了自動跟蹤同步通信衛(wèi)星電視接收系統(tǒng)中的關鍵元件移相器的分類及選取原則，推導了鎖式鐵氧體移相器傳播常數(shù)的超越方程亚洲v欧美v另类v综合v日韩v，并對它進行了詳細地討論日本高清aⅴ永久免费。

This system uses the deuterium lamp as its blazed lamp-house, and makes mechanical turnplate in use of modulating light signal with two frequencies, which is drived by in-phase electromotor with constant velocity. A potomultiplier tube is used to conversion optical signal to electric signal. Using Lock-In Amplifiers to realize magnifying the metrical signal using difference method with two different frequencies. We also analyze its principle of each part of the apparatus and design the realization circuits of each part. The data analysis and the in-phase electromotor control circuits are fulfilled by SCM; the single chip control systems hardware interface and software design are given.

該系統(tǒng)的光路部分使用氘燈作為激發(fā)光源，用同步電機恒速驅(qū)動的機械盤調(diào)制出雙頻光信號激情性感A级黄色有趣味的毛片子在线播放，利用一個光電倍增管進行光電信號轉(zhuǎn)換一级欧美激情性A片在线观看；信號處理部分采用鎖相放大器實現(xiàn)信號雙頻差分處理黄色色播，分析了其各組成部分的原理，設計了各部分的具體實現(xiàn)電路天天综合激情；使用單片機進行數(shù)據(jù)差分處理和電機控制一区毛片视频，給出了單片機控制處理系統(tǒng)的硬件接口電路和軟件設計。

The influence of Zr/Ti on the mechanical and electrical properties ,phase composition,lattice constant of lead niobium stibium zirconate titanatePb(Nb1/2Sb1/2TiO3-PbTiO3-PbZrO3 (Nb1/2Sb1/2=0.02mol piezoelectric ceramics ,in which there are tetragonal and rhombohedral phases coexistent (morphotropic phase boundary,MPB),was studied by conventional containing lead piezoelectric ceramic processing and X-ray diffraction.

借助X-射線衍射儀欧洲男女交欢视频，采用傳統(tǒng)含鉛壓電陶瓷制備工藝研究了Zr/Ti對準同型相界附近鈮銻鋯鈦酸鉛（Pb(Nb1/2Sb1/2)TiO3-PbTiO3-PbZrO3）(Nb1/2Sb1/2=0.02mol壓電陶瓷機電性能精品性无码A片免费不卡专区、相組成和晶格常數(shù)的影響。

Its algorithm to recursively continue the source and receiver wavefields, which includes a wavenumber domain phase shift in a constant background medium followed by a phase correction in the space domain that accommodates lateral velocity variations, can tackle the effects of lateral velocity variations for imaging under complex overburdens.

其遞歸波場延拓算法包含波數(shù)域針對常速背景的相移處理和空間域針對橫向速度擾動的相位校正欧美BB网，可以應對上覆地層速度橫向變化對構造成像的影響日日操免费看毛片。