查询词典 on the principle of

Balloon dilatation device for achalasia of cricopharyngeal muscle is design based on the principle of expansion treatment to stimulate cricopharyngeal muscle contraction and dilatation through the pressure of balloon dilation.

环咽肌失弛球囊扩张治疗装置设计是以球囊扩张治疗原理为基础，通过球囊扩张的压力带动环咽肌收缩舒张以达到治疗的目的。

For purification of BS-63 protein, Ni-NTA resin was used to absorb and elute it from denatured inclusion bodies, based on the principle of chelate.

利用〓和6×Histag螯合的原理，使用Ni-NTA树脂对变性溶解的包含体进行吸附、洗脱。

According to the structural feature of impeller of gas exhauster, in combination with regulation mode of gas exhauster, based on the principle of energy-saving and reliability, how to select gas exhauster was determined.

摘 要：根据鼓风机叶轮结构特点，结合鼓风机的调节方式，以节能、可靠为原则，确定如何选取煤气鼓风机。

In this paper the errors in formula (2) are detected by analysis made on the principle of area substitution,and methods for reducing errors is presented which are capable of a higher degree of accuracy in maximum proximation for Gaussian distribu- tion and fractile formula.

从而得到精度很高的 Gauss 分布函数极大迫近式和分位数公式，并指出精确度明显优于 Hastings 和 Shannelerlan 公式。

Based on the principle of ester hydrolyzation to ether in alkali condition, the process for preparation of dimethyl sulfide from sodium methyl sulfate residue was investigated.

根据酯在碱性条件下水解反应生成醚的原理，研究了以甲基硫酸钠废渣为原料制备二甲基硫醚的方法。

Firstly, based on the principle of jointless track circuit and the transmission of four-terminal network, parameter models of rail line and cable was established, and their frequency characteristics were analyzed.

首先，本文在简要介绍无绝缘轨道电路工作原理和四端网传输原理的基础上，建立钢轨线路和传输电缆的参数模型，并分析其频率特性。

An algorithm for moving object detection and tracking by means of the pulse neuroid model based on the principle of axonal delay is proposed.

近几年，在智能监控系统中，广泛应用了基于生物视觉原理的运动目标检测与跟踪计算模型。

Based on the principle of Hunter reagant,N-Hydroxysuccinimide functional group was introduced into polymer carrier to synthesize a couple of olefine acids" and styrene" copolymer-NHS-esters.

利用Hunter试剂的原理，将N-羟基琥珀酰亚胺酯功能基团引入高分子载体上，合成了几种烯酸与苯乙烯聚合物的NHS酯。

Amino-monomethoxypoly(ethy1ene glycol)(mPEG-NH2) was synthesized based on the principle of Gabriel synthesis.Monomethoxypoly(ethy1ene glycol) tosylate was prepared at first,and then reaction with potassium salt of phthalimide as nucleophile to produce the monomethoxypoly(ethy1ene glycol)phthalimide derivative.

摘 要：首先合成了单甲氧基聚乙二醇对甲苯磺酸酯，然后根据盖布瑞尔合成法原理，以邻苯二甲酰亚胺钾盐为亲核试剂与mPEG-OTs反应，生成单甲氧基聚乙二醇的邻苯二甲酰亚胺衍生物，mPEG-PI与水合肼反应肼解生成伯胺，合成了一端为氨基的单甲氧基聚乙二醇(mPEG-NH2)。

Based on the principle of polybasic vapor-liquid balance ,we put forward a method of simulated calculation of the product phase in man-made hydrocarbon expulsion simulated test by temperature and pressure.

利用多元汽液平衡原理，建立了人工生排烃热压模拟实验产物存在相态的模拟计算方法，该方法适用于T≤482℃，p≤20.265MPa下的复杂体系。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。