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  blasting
    Calculation of the Charge of Underwater Blasting of Multiplelift Composite Walls Vessel Structure
    多层复合壁容器状结构水压破的药量计算
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    Calculation of Blasting Tamping Parameters of Wharf Foundation Bed by Energy Method
    用能量方法计算码头基床夯参数
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    ANALYSIS OF THE FIRING CONDITION OF CAPACITOR BLASTING MACHINE
    电容式发器准条件的分析
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    STUDY AND APPLICATION ON LOADED CONSTITUTION WITH WATER PAD FOR SMOOTH-SURFACE BLASTING
    水垫层光装药结构技术的研究与应用
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    A simulation of blasting vibration in middle and far field of explosion source
    源中远区的破振动场模拟
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    THE RESEARCH OF A NEW KIND OF PRESSURE FEEDBACK NITROGEN INFLATING MECHATRONICAL HYDRAULIC IMPACTOR SYSTEM
    新型压力反馈氮式机电一体化液压碎石冲击器系统研究
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    Discussion of Misfire in Serial Electric Firing Network
    电网络串联丢炮探讨
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    Design of Drill-blasting Construction for the Frozen Soil Section and Its Practice
    表土冻结段施工钻设计与实践
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    A NEW LOW-ENERGY FUSE DETONATING SYSTEM AND ITS APPLICATION IN SAN GORGE WORK
    新型低能导索起系统及其在三峡工程中的应用
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    The hollow Co-Al2O3 cermet parts with fine and uniformly distributed metal phase in the Al2O3 matrix is successfully prepared by controlling initial reactive temperature of thermo-explosive reaction at about 1 050 K using Al-Fe2O3 assistant system.
    利用Al-Fe2O3助燃体系控制热反应的起始温度,使热反应在1050K左右进行,制备了Co-Al2O3金属陶瓷的中空件,并获得了金属相细小、均匀分布于陶瓷基体中的Co-Al2O3金属陶瓷。
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  blasting
An evaluation formula of the detonation wave pressure in the system of laser, energy transferring-medium and sheet metal is built according to the theory of detonation wave and blasting gas-dynamics.
      
A nondestructive method of monitoring the heat resistance of aluminum coating deposited onto substrate subjected to shot-blasting is suggested.
      
By this method was studied the damage caused by blasting in üAspüo diorite rock samples.
      
A radioisotopic method for determining the depth of surface cold-work hardening in 09Г2C-steel pipelines subjected to shot blasting is described.
      
A radioisotope technique for estimation of heat resistance of aluminum coatings after shot blasting
      
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The vibration of layer of rocks or soil induced by the industrial blasting and its hazard to the surrounding buildings is an important blasting safty problem.However,there is no complete and reliable method of calculation calculating the magnitude of the vibration velocity and the safe distance of buildings,etc.The author,at the various blasting processes in recent years,measured the three vibrating velocity components of the ground or base rocks at various distances from the blasting sources,then fitted relations...

The vibration of layer of rocks or soil induced by the industrial blasting and its hazard to the surrounding buildings is an important blasting safty problem.However,there is no complete and reliable method of calculation calculating the magnitude of the vibration velocity and the safe distance of buildings,etc.The author,at the various blasting processes in recent years,measured the three vibrating velocity components of the ground or base rocks at various distances from the blasting sources,then fitted relations among velocities,quantites of explosives and distances with the least square method.The experimental formulas and rules obtained are valuable for reference in the device of industrial blasting engineering.

工业破引起的基岩或土体的震动,对区周围建筑物的危害影响,是破安全的一个重要课题。但是现在还没有完善可靠的计算方法,计算各种破震动的大小以及对一般建筑物的安全距离。作者在最近几年中的各种破过程,测量了源不同距离的基岩和土层质点振速的三个分向量,用最小二乘法整理分析了速度、药量和距离之间的关系,所得实验公式和规律,可供工程破设计参考。

A new type of firing system known as plastic detonating fuse or non-electric firing system was used for Yong An tunnel and cut excavation in Tahe-Shibazhan railway branch line construction in Daxing Anling Area,Northeast China.This paper describes how the system was used,discussing its economy and technical advantages compared with the fuse ignition and electric ignition system.Cautions for safety and our veivvs on introducing the firing system are also given.

我们在东北大兴安岭塔十支线开挖永安隧道和路堑破中采用了一种新型的起器材—塑料导管起系统。 本文主要介绍使用该系统的方法,与火、电等起方法相比其经济技术效果,使用中的注意事项,以及我们对推广使用这种起器材的一些看法。

This paper presents the method,purpose and significance of studying the compactness of rock surrounding the cavity in two underground nuclear explosions conducted in limestone and biotite-Plagioclase granite respectively.The sample collection method during the excavation and drilling after detonation is briefly described.And the measurement results of compactness index of the postshot rock samples have been analysed and contrasted with those in the pre-shot rock samples.A lot of measured data indicate that the...

This paper presents the method,purpose and significance of studying the compactness of rock surrounding the cavity in two underground nuclear explosions conducted in limestone and biotite-Plagioclase granite respectively.The sample collection method during the excavation and drilling after detonation is briefly described.And the measurement results of compactness index of the postshot rock samples have been analysed and contrasted with those in the pre-shot rock samples.A lot of measured data indicate that the change of rock compactness including volume weight and total porosity decrease with increase of distance from the cavity wall.However,when the distance is far enough from the cavity wall,the compactness of postshot rock will be approximate to that of preshot rock.The specific gravity of postshot rock always remains the same in spite of where the samples were collected,and agrees approximately with that of preshot rock.This fact shows that the minerals in the rock after detonation have neither distinct phase transition nor any change in composition The above mentioned conclusions are confirmed by the petrographical study in the rock samples after detonation.This paper also discusses the relationship between the change of compactness of postshot rock and the mechanical damage effect of the shock wave of nuclear detonation on rock.We consider that this relationship may be used as a criterion in the division of damaged zones of the free-field rock after detonation.

本文介绍了石灰岩和黑云母斜长花岗岩中两次地下核试验空腔周围岩石致密性的研究方法、目的和意义:简单叙述了后开挖和钻探取样的情况,着重对比分析了这两次试验后的岩石致密性指标的测定结果。大量测试数据表明:后的岩石容重和孔隙度的变化,随着离空腔壁距离的增大而减水;远离空腔壁一定距离之后,它们就趋近于岩石的前测值,但岩石的比重与距离的变化无关,而且后基本一致,这说明后岩石矿物无明显相变作用,矿物成分也无变化,这一结论也被后的岩矿鉴定结果所证实。 文章还论述了岩石致密性的变化与炸击波对岩石机械破坏的关系。并认为这种变化特征可以作为自由场岩石破坏分带的一种依据。

 
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