查询词典 MR

After discussion of the relation of MR〓 and ALT, an algorithm proposed by Zhongping Qin and Huanguo Zhang, two conclusions are obtained: if a weak key can be successfully attacked by the method of reduced echelon matrix, it can also be successfully attacked by a linear R〓R〓 transformation; meanwhile, there exists such a weak key that can be successfully attacked by the algorithm MR〓 or linear R〓R〓 transformation, but this key can not be successfully attacked by the algorithm ALT. For a NFA, according to the number of solutions for the image equation of its R〓R〓 transformation, there exist two sufficient criteria about its weak invertibility and weak inverse.

通过比较MR〓与覃中平和张焕国提出的攻击FAPKC加密情形的算法ALT，证明了如下结果：凡用约化梯阵方法能攻击成功，用线性R〓R〓变换也能攻击成功；同时，存在着用算法MR〓或线性R〓R〓变换攻击成功的弱密钥，用算法ALT攻击失败。

The experimental results indicated that the light-induced MR molecular reorientation effect, the so-called twisted angle, caused by the adsorbed MR, decreased with increasing ellipticity of the elliptically polarized green light. Notably, zero pre-tilt angle of LC alignment was achieved in this experiment.

再利用不同光强度的圆偏振绿光雷射激发MR，观察并探讨MR吸附的结果，实验结果显示在圆偏振光各方向能量均等的情况之下，不会有扭转角跟倾角产生，且在吸附面上有不均匀的成核现象发生。

Forces loyal to Mr Khamenei and his bellicose president are now pitted openly against reformers and pragmatists backed by a former president, Akbar Hashemi Rafsanjani, hitherto considered Iran's second-most-powerful man, who, with another former president, Muhammad Khatami, a frustrated reformer, has outspokenly backed Mr Mousavi.

忠于 Mr Khamenei 和现任总统的势力已经受到改革派和激进主义者支持的前任总统 Akbar Hashemi Rafsanjani 的公开挑战。到目前为止被认为是伊朗第二大势力的另一位前任总统，Muhammad Khatami，一个失败的改革者，已经公开表态支持 Mr Mousavi。

Objective To analyze MR findings of liver abscesses and to evaluate diagnosis and differential diˉagnosis value of MR.

目的 分析肝脓肿的MR表现，探讨MR的诊断和鉴别诊断的价值。

objective to evaluate the role of mr perfusion weighted imaging in preoperation diagnosis of meningiomas.methods mr perfusion weighted images was performed in 47 patients with meningiomas followed by conventional imaging.results the mean rcbv values of angioblastic was the highest in the parenchyma of tumor.the mean rcbv values of malignant group was the lowest.the biggest mean rcbv values among different type meningiomas was statistically significant.the biggest mean rcbv values between benign and malignant group meningiomas was statistically significant,but not in the peri-tumor edema.conclusion the rcbv values were useful in the preoperative differentiation diagnosis of different types of meningiomas.those in the peri-tumor edema were useless in the preoperative differentiation diagnosis of different types of meningiomas.

目的 探讨磁共振灌注成像技术对脑膜瘤术前分型及良恶性鉴别的临床应用价值。方法对47例脑膜瘤病人行mr灌注成像检查，对5种亚型的良性脑膜瘤的mr灌注成像进行分析，并与非典型性及恶性脑膜瘤进行比较。结果血管瘤型脑膜瘤实质部分的rcbv值均数最高，恶性组脑膜瘤的rcbv值均数最低。各亚型间瘤体实质最大rcbv值均数间差异有统计学意义(p＜0.05)，良恶性脑膜瘤实质部分最大rcbv值均数间差异有统计学意义(p＜0.05)。瘤周水肿区的rcbv值均数间差异无统计学意义(p＞0.05)。结论 rcbv值对脑膜瘤术前分型及良恶性鉴别有所帮助，而瘤周水肿区的rcbv值对脑膜瘤分型及良恶性鉴别未显示临床实用价值。

Bipyridyl and 1,10-phenanthroline (L3), Cl3SnCH2CH2COORo L (L= L1, a; L2, b; L3, c), formed by low-heating solid-state reaction. The crystal structures of 1 and 2 show that the tin atom adopts a distorted trigonal bipyramid geometry via intramolecular carbonyl oxygen to tin coordination [the distances of Sn-0 bond are 0.2351(6) ran for 1 and 0.2362(3) nm for 2]. Compound 1 belongs to monoclinic with space group P2/c, a = 0.9842(2) nm, b =1. 0923(8) nm, c = 1.23948(11) nm,/?= 93.894(15)°, V= 1.3294(4) ran3, Mr = 366.23, 7 = 4. Compound2 belongs to monoclinic with space group P2{/c, a = 1.04443(9) nm, b = 1.04823(7) nm, c = 1.28113(9) nm,/= 90. 953(8)°, V= 1.40239(19) nm3, Mr = 380.25, Z = 4

利用元素分析、红外光谱、核磁共振对其结构进行了表征，并通过X射线单晶衍射测定了1和2的晶体结构，二者均为具有分子内羰基氧原子配位的畸变三角双锥结构。1属于单斜品系，空间群P21/c， a=0.9842(2)nm，b=1.0923(8)nm，c=1.23948(11)nm，β=93.894(15)°，V=1.3294(4) nm^3，Mr=366.23，Z=4.2属于单斜晶系，空间群P21/c，a=1.04443(9)nm，b=1.04823 (7)nm，c=1.28113(9)nm，β=90.953(8)°，V=1.40239(19)nm^3，Mr=380.25，Z=4。

Although computed tomography and MR are complimentary, it is felt that MR represents the imaging procedure of choice with respect to the assessment of the etiology and extent of cerebral parenchymal inolement in patients presenting with a clinical combination of congenital or early onset of seizures, hemiparesis/plegia, and/or craniofacial asymmetry.

虽然CT和MR是互补性的，但是在评价临床表现为先天性或者早期癫痫，半身麻痹或者瘫痪，颅脑不对称的病人的发病原因和病变范围时，目前倾向于MR是首选影像学检查手段。

Results Of 10 cases with internal impingements,MR showed infraspinatus abnormalities were 8 cases.Supraspinatus abnormalities were 4 cases.Labral abnormalities were 9 cases.Posterosuperior humeral head damage were 10 cases.10 cases with subacromial impingement.MR showed infraspinatus abnormalities were 2 cases.Supraspinatus abnormalities were 8 cases.Labral abnormalities were 0 case.

结果 10例内在撞击综合征MR表现为冈下肌腱异常者8例，冈上肌腱异常者4例，盂唇异常者9例，肱骨头后上部异常10例。10例肩峰下撞击综合征MR表现为冈下肌腱异常者2例，冈上肌腱异常者8例，盂唇异常者0例，肱骨大结节异常8例。

MR may obviously demonstrate the entire image if hepatobiliary cystadenoma, the mural nodus form and corpora mammillaria solid lesions suggest canceration. Conventional MR sequences combine with dynamic enhancement and MRCP possese fairly diagnostic value to hepatobiliaty cystadenoma.

MR能明确显示肝内胆管囊腺瘤的整体影像的特征性表现，若囊壁上有结节或乳头状肿块提示局部有癌变，MR常规扫描结合动态增强及MRCP成像对肝内胆管囊腺瘤具有很高的诊断价值。

Figure 3 Monopolistic versus Perfect Competition Monopolistically Competitive Firm Price MC Markup Perfectly Competitive Firm Price MC ATC ATC P P = MC Marginal cost MR Demand P = MR 0 Quantity produced Efficient scale Quantity 0 Quantity produced = Efficient scale Quantity Excess capacity

图3。 垄断竞争和完全竞争垄断竞争企业价格价格加成价格完全竞争企业 MC ATC P = MC MC ATC 边际成本 P = MR 需求曲线 MR 生产量有效规模需求产量生产量=有效规模产量过剩市场能力

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失