A fracture model of jointed rock mass is established considering the effect of horizontal seismic acceleration. Based on the proposed model, the relationship between the stress intensity factor, and length, spacing and dip of joints is discussed.

Mechanism of wide spacing short delay blasting and its proper burden adn spacing of the holes

宽孔距微差爆破机理及其合理的孔距与排距

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Spacing of different blasting holes with and without control hole for stress wave propagation and particle effects of effective stress by.

研究不同爆破孔间距组合以及控制孔对于应力波扩展和质点所受有效应力的影响。

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The transmission characteristics can be changed by changing the arrangement, size or holes spacing of air holes.

通过改变空气孔的排列方式、大小、孔间距都能使其传输特性发生改变。

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Factors such as rigidity of longitudinal beam, column spacing of the frame, frame beam span etc. have certain influence on the space work under the vertical load in the normal structure change and concerning rules can be reflected.

纵向梁刚度、框架的柱距、框架梁的跨度等结构因素在有限制的范围内对于框架在竖向荷载作用下的空间作用有一定的影响，且具有一定的规律。

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Within the range of experiment, increasing fin height or decreasing spacing of fins of petal-shaped fin tube is helpful to improve the performance of heat transfer enhancement.

在实验范围内，花瓣管翅片高度的增加、翅间距的减少都有利于传热强化性能的提高。

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In addition, the effect of several parameters including the type of the blast, the spacing of fins, and the fin thickness on the frost performance was discussed.

讨论了改变风机类型、翅片间距以及翅片厚度在内的几种设计参数对结霜性能的影响。

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Spacing of drainage ditches in field under the influence of evaporation

蒸发影响下农田排水沟（管）间距的计算

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In addition, the influences of the diameter and spacing of reinforcing steel bars and the thickness of covers on the failure modes of the concrete covers were evaluated.

此外，分析了钢筋直径、钢筋间距和保护层厚度对保护层破坏模式的影响。

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The joints between the central slab and the four side slabs can be specified either by an efficiency of shear transfer or by the size and spacing of dowel bars.

中心板与四块边板之间的联系可以由剪力传递效率，或者由传力杆的尺寸和间距来表示。

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The spacing of steel bars has more important effect on the cracks then the diameter of steel.

钢筋间距对裂缝的影响较大，而钢筋直径对裂缝的影响有限；

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P The spacing of bars shall be such that the concrete can be placed and compacted satisfactorily for the development of adequate bond.

钢筋间距应考虑钢筋的放置和混凝土的压实，并且混凝土和钢筋能形成足够的粘结性。

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For a bundle, the rules given in8.2 for spacing of bars apply.

对于捆绑，在8.2的规则给出了钢筋间距应用。

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Establishing and Calculating the Reliability Mathematical Model of K 8 Flap's Spacing Mechanism

K-8机襟翼限位机构可靠性建模及求解方法

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Simulating the seeding process of seed spacing mechanism with object oriented method

用面向对象的方法进行精密播种机排种器工作过程的计算机仿真

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Thermocouple-type heat sensitive cable, a new linear temperature sensor, contains a continuous pair of dissimilar thermocouple conductors, a spacing material ( insulation), an outer sheath and hermetically sealed cold end connectors.

热偶型热敏电缆由热电极、隔离材料、保护管和冷端连接件组成，具有线性结构，是一种新型的线性温度传感器。

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The results show that the loss of surfactant is maximum which is about 80% injection after 1/ 5 well spacing migration, and loss of polymer and alkali are only 12% and 15% respectively.

结果表明，活性剂的损失量最大，在运移1/5井距后即损失约80%；而聚合物和碱的损失分别只有12%和15%。

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Birth spacing is the age interval among the children within one family.

生育间隔，是指在同一家庭中不同儿童之间的年龄间隔。

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This paper analyzes train headway in urban rail transport system, and puts forward three factors affecting train headway including safe spacing, cutoff interval and traffic flow.

通过对城市轨道交通系统中列车间隔的分析，提出了影响列车间隔的3大因素：安全间距，车站停留时间和运行裕量。

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Furthermore, the processes of bolted rocks 'and tunnel rocks' deformation were simulated with ANSYS and FLAC. The regular patterns are accordant with the numerical simulated results. The theoretical guides have been provided for the bolt supporting parameters design of spacing interval and array pitch.

并使用ANSYS和FLAC分别对锚固体和巷道围岩的变形破坏过程进行了数值模拟，图像处理结果和数值模拟结果一致，为锚杆支护设计提供间距、排距的理论依据。

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Based on the relationship between windbreak structure ( optical porosity) and wind reduction, the chief indices for determining spacing interval, i.e., the windbreak structure index() and the parameter of microclimate, represented by the problem wind ( Lrp), were determined.

基于林带结构（疏透度）与风速降低的关系，确定了林带主带间距离的主要参数，即，林带结构系数（δ）和以主害风为代表的小气候参数（Lrp）。

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