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In combination with these experimental phenomena and theoretical analysis, the foam corrosion inhibition mechanisms in foam drilling are first put forward in the paper. They include: the adsorption of foaming agent on steel surface; the complex of foam-stabilized viscosifier with the multivalence metallic ions in formation water; isolating the steel from oxygen by foam; and fixing sands and reducing washout by foam.
结合实验现象和理论分析,首次总结提出泡沫钻井中泡沫的缓蚀机理,泡沫的缓蚀性主要在于:发泡剂在钢铁表面的吸附;稳泡增粘剂能与地层水中的多价金属离子络合;泡沫对氧的隔绝;泡沫能固定砂粒,减少冲蚀。
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A dynamic model was developed with kinematic differential equation derived for a dual-disc over-hung rotor system with rub-impact fault. The stability of the system and stability regions were studied by setting up nonsingular linear transform matrix and by use of Jacobi matrix in combination with the theory of Routh Hurwitz. Then, the effects on the stability regions of the system were discussed with relevant parameters.
建立了悬臂双盘碰摩转子系统的动力学模型和运动微分方程,通过创建该系统的非奇异线性变换矩阵并利用变换矩阵的Jacobi矩阵结合Routh Hurwitz理论,研究了悬臂双盘碰摩转子系统的稳定性和稳定区域,并进行了相应的参数讨论。
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"Compared with nonuse of hormone therapy, oral conjugated equine estrogen therapy increases the risk of venous thrombosis dose-dependently, esterified estrogen does not influence venous thrombosis risk, and the use of any estrogen in combination with medroxyprogesterone acetate increases risk as well," the authors write."If replicated, these findings for venous thrombosis may have implications for the choice of hormone in treating menopause-related vasomotor symptoms in perimenopausal and postmenopausal women."
Smith博士同时指出,相较於非荷尔蒙使用者,口服结合性雌激素不论剂量高低都会提高静脉栓塞的风险,脂化雌激素对静脉栓塞并不会造成影响;任何雌激素,只要伴随medroxyprogesterone acetate,都会提高静脉栓塞的风险;如果本项试验适用,就可以选择正确的荷尔蒙疗法,以治疗更年期及停经期妇女的血管舒缩症状。
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In combination with the general principle of education, the article reviews the cadre education at the time of Yan'an, it is believed the momentum of success of cadre education at that time is: Comrade Mao Zedong played a crucial role in the cadre education in Yan'an time; and the Party Center's highly regarded education, and strengthened the leadership of cadre education in Yan'an time, and adjusted the unadapted organizational structure, all the party members and cadres treated it seriously, and leaders set themselves as examples; the cadre education at that time is accordant with educational rules and the historical development rule of party, conforming to historical requirements; correct guidelines and methods were utilized.
总结延安时期中国共产党的干部教育的基本特征有:坚持思想领先,不断加强思想教育;注重党员管理,符合教育规律;强化党内团结,提供组织保证;运用方针正确、方法得当,把学习同总结历史经验结合起来,提倡和风细雨,正确开展批评与自我批评,正确对待犯错误的同志。
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Objective To assess the anti anginal efficacy and the acceptability of trimetazidine in combination with conventional treatment in patients with stable exertional angina in China.
TMZ应用 12周后,患者心绞痛发作次数显著减少且硝酸甘油消耗量明显降低,可能与心绞痛分级明显降低有关。
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On the extensive background of the development of normal education system of the world, this thesis makes an objective and all-sided analysis of the present situation of normal education of our country and furthermore profoundly approaches the future of the development of the normal education of our country, and confirmatively claims that the normal education of our country will surely blaze a new trail and form our own features in the process of reformation in combination with the practical situation of our country and in accordance with the universal developmental principles of normal education of all countries.
本文以世界师范教育制度发展为广阔背景,全面客观地分析了我国师范教育的现状,并依循各国师范教育共同的发展规律,结合我国实际,深入探讨了我国师范教育发展的未来的走向,肯定地认为我国的师范教育必将在改革发展中走出新的路子,形成自己的特色。
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One of the opinions was to reason that the electron configuration of NO molecule is the same as that of Ol molecule based on the fact that NO is isoelectronic with O2+. In the present paper, we suggest, according to ah initio calculation results in combination with UPS, an ordering of the NO molecule orbital, i. e. 5σ being a weak bonding orbital and lying slightly higher in energy than 1π, corresponding to the case of N2 molecule. The...
本文用NO和O_2~从头计算结果以及NO的紫外光电子能谱相结合的方法说明NO的5σ轨道是弱成键轨道,5σ的轨道能稍高于1π轨道能,也就是说NO的能级次序是与N_2分子相同的;NO与O_2~+虽是等电子体,但是能级次序并不相同,因此由O_2~+的能级次序确定NO分子的电子组态是不妥的。
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Vascular endotheliocyte fluorescence staining and leukocyte fluorescence tracing method were applied, in combination with microscopic video system and computer imaging analyzing system, to observe in dynamic and quantitatively the influences of acupuncture on pia matral encephali microvascular morphology, density and blood flowing velocity at 3 hours, 6 hours and 24 hours after cerebral occlusion of meddle cerebral artery.morphology, density and blood flowing state at various time divisions observed directly microscopically and vascular endotheliocyte morphology and the state of brain tissue which near the microvascular after infusion with velocity in infarcted area at various time divisions measured in quantity in each group.microvascular endotheliocytes were colored worse and more fluorescent exudation appeared.
采用血管内皮细胞荧光染色及白细胞荧光示踪法,结合显微录像系统和计算机图像分析系统,动态定量地观察了针刺对大脑中动脉阻塞后3,6,24h软脑膜微血管形态、密度、血流速度的影响。主要观察指标:①从显微镜下直接观察各组大鼠不同时段软脑膜微血管的形态、密度、血流状况,以及注入荧光剂后血管内皮细胞形态和周围脑组织状况。②定量测量各组大鼠不同时段梗死区微血管密度、血流速度。结果:120只大鼠均进入结果分析。
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The present paper deals in detail with the origin, dynamics, geochemistry and physicochemistry of the ore-forming fluids, in combination with the origin of ore-forming matter, gold behaviour in the ore-forming fluids, equilibrium and unstability-precipitation in the course of migration on the basis of mineral composition and mineralization, alteration and ore-controlling factors of the representative gold deposits hosted in the Ailao Mountains ophiolitic melange belt, Yunnan.
笔者通过哀牢山蛇绿混杂岩带典型金矿床的物质组成、成矿规律、蚀变及控矿作用的研究,对哀牢山金矿带的成矿流体来源,成矿流体动力学、地球化学及物理化学性质进行了详细地讨论;对金矿的成矿物质来源,金在成矿流体中的存在形式,迁移过程中平衡、失稳-沉淀等进行了详细地分析和探讨。
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The present paper deals in detail with the origin, dynamics, geochemistry and physicochemistry of the ore forming fluids, in combination with the origin of ore forming matter, gold behaviour in the ore forming fluids, equilibrium ...
笔者通过哀牢山蛇绿混杂岩带典型金矿床的物质组成、成矿规律、蚀变及控矿作用的研究,对哀牢山金矿带的成矿流体来源,成矿流体动力学、地球化学及物理化学性质进行了详细地讨论;对金矿的成矿物质来源,金在成矿流体中的存在形式,迁移过程中平衡、失稳沉淀等进行了详细地分析和探讨。
- 推荐网络例句
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Do you know, i need you to come back
你知道吗,我需要你回来
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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.
1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。
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Chapter Three: Type classification of DE structure in Sino-Tibetan languages.
第三章汉藏语&的&字结构的类型划分。