查询词典 phase change

The results showed the change of residual flexural strength was controlled by oxidation of carbon phase.

结果表明，残余抗弯强度的变化受C相的氧化控制，残余抗弯强度与失重率之间的变化规律符合指数关系。

Single-phase Sinusoidal Pulse Width Modulation Inverter Power Supply in this paper belongs to AC power supply (AC-DC-AC convert). Control mode adopts feedback of voltage control. The methods of intermitting power flux and changing duty-cycle can change pulse width of drive voltage that adjust and rectify output voltage ultimately.

本文设计的单相脉宽调制逆变电源属于交流电源，采用电压反馈控制，通过中断功率通量和调节占空比的方法来改变驱动电压脉冲宽度来调整和稳定输出电压。

Thirty two point six percent (42/129) of menopausetransition women and 18.9％(60/318) of menopause women had breast structure changes,〓=9.26, P＜0.01. The frequency of breast structure changes decreased with decreasing ofserum of 〓 level and increasing of age. Four (4/29, 13.8％) in HRT group had breaststructure changes, which disappeared after discontinuing HRT or reducing the dose of HRTin 3 subjects. Conclusions: Most of normal menstrual women and menopause transitionwomen experienced Mastalgia; Mastalgia occurred in 89.7％ of subjects and lasted forabout 2 M. in the 1-year ccHRT; Image of breast ultrasound changed following menstrualcycle in normal menstrual women; Breast pain and breast structure change may be causedby higher 〓 and P level in luteal phase; The breast structure changes of HRT user weresimilar to that in normal women and were reversible.

大部分正常月经妇女和绝经过渡期妇女有周期性乳房胀疼，绝经后妇女应用17 β-雌二醇2mg加醋酸炔诺酮1mg连续联合治疗1年中大部分使用者有持续约两个月的乳房胀疼；乳腺体层厚度随体内雌孕激素水平的下降和年龄的增加而逐渐萎缩，绝经后妇女应用17 β-雌二醇2mg加醋酸炔诺酮1mg连续联合治疗1年后，对乳腺体层的厚度没有明显的影响；超声下乳腺结构改变主要受体内雌孕激素水平的影响，正常月经妇女中1／3的乳腺结构改变具有可逆性，绝经过渡期和绝经后妇女中有一半的乳腺结构改变的特征类似正常月经妇女具有可逆性的乳腺结构改变；绝经后妇女应用17 β-雌二醇2mg加醋酸炔诺酮1mg连续联合治疗1年后，少数使用者出现的乳腺结构改变可随药物剂量的调整或停药而恢复；对长期HRT使用者仍需加强乳腺的监测，长期HRT对乳腺的影响值得进一步研究。

We examined the variation of the amplitude and the phase and their sensitivity functions with the conductivity and found they are all change monotonically with it.

井间磁场的实部、虚部随地层电导率的变化呈明显的周期性，这会给由它们的测量资料反演带来很大困难，所以宜将振幅和相位作为测量量。

Its work-hardening may be attributed to a change from nonequal strengthening state to strength-ratio-equal state A summarized plot for its deformation behaviour during cold-rolling is also given to understand rather easily the relative variation of the structure and properties of each phase in the whole process.

文中提出了冷轧时形变行为的综合图，能够清楚地描述双相20钢中两相组织及性能相对变化的全过程。

An advanced non-destructive measurement technique was applied for the first time in the research of two-phase transport of gas-water in coal seam. The home-made triaxial osmoscope which is made up of non-magnetic polycarbonate material and can change confining pressure, axial pressure and pore pressure, was placed into the magnetic cavity of NMRI instrument.

首次将先进的无损检测NMRI成像技术引入煤层中气水两相运移的研究领域，将自主设计研制的、可同时改变围压、轴压和孔隙压的、非磁性聚碳酸酯材料制成的三轴渗透仪置于NMRI成像仪磁体腔中，通过气驱水和水驱气NMRI试验实时观测了气水流动规律。

Reverse-transcription PCR assays were used to detect the mRNA expression level of related regulatory genes such as p15, p16, p21, p27, p57, surviving, cyclin B, cdc2 and chk1, and Western blot assay to detect the level of protein expression and phosphated change such as survivin, cdc2 and chk1. Results:(1) K562 cell arrested on G2/M phase were obviously increased after co-cultured with 2 to 10μmol/L Arsenic trioxide for 24 hours. The ratios of control group, 2μmol/L, 5μmol/L and 10μmol/L groups were 22.6±3.4%, 27.2±2.3%, 43.8±4.5% and 36.7±4.1%, respectively.

体外培养K562细胞，以不同浓度AS_2O_3作用不同时间后采用PI染色、流式细胞仪检测药物作用后细胞的周期分布改变；逆转录酶多聚酶链扩增方法检测细胞周期相关调节基因(p15、p16、p21、p27、p57、survivin、cyclinB、cdc2、chk1)的mRNA表达变化；Western blot方法检测细胞周期相关调节蛋白表达及磷酸化改变(survivin、cdc2、cdc2-p、chk1)。

In 1959 Sauerbrey developed an empirical equation to describe the mass sensitivity of gas phase mass deposition on a piezoelectric quartz crystal——Sauerbrey equation:ΔF=〓=-CΔm, where ΔF is measured frequency shift, in Hz; F〓 is the fundamental resonant frequency, in Hz;Δm is mass change, in g; A is piezoelectrically active area , in cm〓;μ〓 is shear modulus of quartz, 2. 947×10〓g· cm〓;ρ〓 is density of quartz, 2. 648g·cm〓; C is mass sensitivity constant , in 〓.

1959年，Sauerbrey最先提出了将压电晶体谐振器用作定量测量质量的装置，并从理论上导出了频率与质量变化之间的关系式——Sauerbrey方程：ΔF=〓=-。。。

Now,China is in the phase of entensive use of resources,including the land ,so study on the land-use change from the socio-economi aspect is good for realizing the rapic increase of economic and safeguarding the continuable using of land resources.

在我国目前处于资源利用较为粗放的阶段，从社会经济角度来研究土地利用的变化，有利于实现经济快速增长的同时保障土地资源的可持续利用。

But in early resorptive phase in GSB group. The change of BMD, BGP, D-Pyr/Cr and biomechanics index in OVX-PII group were the same as that in OVX-PI group, but the rising range of compressive strength limit in lumbar spine and bend load of femur is bigger than that of JGG, and GSB group. Dynamics osteoblast appeared in large numbers on the surface of os, we can observe the transforming process from osteoblast to osteocyte.

同期预防Ⅱ组的BMD、BGP、尿D-Pyr/Cr及生物力学指标的变化大体维持在预防用药12周时水平，但从数字上看腰椎椎体的压缩强度极限和股骨的弯曲破坏荷载两项的上升幅度均大于健骨颗粒组和骨松宝组，预防II组骨质表面出现成群活跃的成骨细胞，可见成骨细胞往骨细胞转化过程。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐