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Based on the soft start theory, this article introducea a soft starter motor system based on the AT89C2051 microcomputer.
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采用AT89C2051微处理芯片为核心的电子电路，实现三相异步电动机平稳软起动，降低起动电流，限制起动转矩；并对电动机的欠流、过载等进行监测报警。 |
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Based on the solution set, the optimal approximation to a given matrix is constructed, and the necessary and sufficient conditions for the solvability of the problem are given and the expression for the solution is provided.
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讨论了用双中心矩阵反问题的解构造给定矩阵的最佳逼近问题，给出该问题有解的充分必要条件和解的表达式。 |
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Based on the solutions for both constant and variable bandwidth storages, their relationship is derived.
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在基于等带宽存储的求解法与基于变带宽存储的求解法的基础上推导出它们的关系。 |
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Based on the solving technique of explicit non-linear finite element method and the mechanism in ship-anti-collision equipment collision, this paper develops numerical simulation to collision process of a ship and an anti-collision equipment, then studies
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摘要在研究船－桥墩防护装置碰撞机理的基础上，结合实例探讨了碰撞问题中的诸多因家（如碰撞位置、防护装置的结构尺寸以及碰撞速度等的变化）对防护装置抗撞性能的影响，并据此对桥墩防护装置提出了改进意见：通过仿真计算，改进防护装置的板厚以及板上筋的结构尺寸；在防护装置的内围壁与桥墩之间放置橡胶吸能元件或在防护装置的外围壁安装橡胶护舷件，以加强防护装置的吸能作用。 |
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Based on the sound distinguishing characteristics of the tinnitus patients, an instrument of tinnitus treating which is combined with the acoustical theory is designed.
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摘要根据耳鸣患者的辨声特征，结合掩蔽音治疗耳鸣的声学原理，完成了耳鸣治疗仪的系统设计与实现。 |
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Based on the sound wave transferring theory of infinite elastic and viscoelastic materials with the method of transferring matrix, the formulas of transmission coefficient and the level of sound insulation are gained, which consider shearing strength in t
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摘要基于无限大弹性体和粘弹性体的波传递理论，采用传递矩阵的方法，对斜入射情况下的透射系数和隔声量进行了理论推导，考虑了声波在橡胶中传播所产生的剪切力，并就单层复合结构的隔声性能进行了详细的研究，进而也分析了多层复合结构的隔声性能。 |
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Based on the special geological conditions, the paper gives an analysis on spatial distribution properties of soil and water loss in Guizhou Province, and gives the detail description for each area.
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从贵州省特殊的地质条件出发，分析了全省水土流失的空间分异规律，对各区水土流失特征进行了详细的阐述。 |
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Based on the specialty of medical insurance and status quo of medical institutions, to prevent misuse of medical fund and protect rights of the insurants, this paper calls for strengthening of medical insurance management and intendance.
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鉴于医保工作的特点和医疗机构的现状，本文提出应增强医疗保险管理监督检查工作的力度，以杜绝医疗保险基金的流失，保障参保人的合法权益。 |
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Based on the specific facts of the economic growth in China, this paper modified the Solow Model and then estimated the possibility of the growth rate.
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本文根据中国经济增长的特徵事实，对索洛模型做出了一些修正，并据此对中国经济增长的可能性进行了重新估算。 |
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Based on the specimens deposited in the Herbarium of Northwest Institute of Plateau Biology, the Chinese Academy of Sciences, and relevant literature, it was found that 82 species and 37 varieties belonging to 54 genera and 19 families are endemic to Qing
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摘要主要依据中国科学院西北高原生物研究所青藏高原生物标本馆内所存标本为基础，结合对相关资料的全面收集，整理出青海特有植物82种和37变种，隶属19科54属。 |
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Based on the spectrum of Mean Sea Level (MSL) and the relation model between two tidal stations, the mathematical model for hydrographic datum transfer are studied.
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基于平均海面的频谱结构和两验潮站潮位之间的关系模型，对基准面传递的方法原理进行了理论研究。 |
