圆管子直径比率控制阀门关闭的旋转角度。
The ball-to-pipe diameter ratio governs the handle turning angle at which the valve becomes closed.
曲线形状随液体速度、粘度、管子直径和管壁粗糙度而变化。
The shape of the curve would vary with liquid velocity, viscosity, pipe size, and pipe surface roughness.
这是一组洁净管道阵列，每根管子直径5毫米，其中灌注了混合特种染料的油状液体。
It’s an array of clear tubes, each five milimeters in diameter. The tubes are filled with oil blended with a propietary dye.
管束式热交换器。管子分布。管底座钻孔直径。导向扇形块和支承板。
Tubular heat exchangers; tube pitches, diameter of bores in tube sheets, baffles and support plates.
大部分补强板是从与所修管道具有相同直径的管子上切割下来。
Most patches were fabricated from material cut from pipe having approximately the same diameter as the pipe to be repaired.
通径规的直径就是管子生产商所能够确保的每一管子说明书上的内径。
The drift diameter is the inside diameter (ID) that the pipe manufacturer guarantees per specifications.
异径管也叫大小头，两端管口直径不同，用于连接不同直径的管子或法兰进行变径。
Different-diameter pipe size head, also called tube diameter at different, used to connect different diameter of pipe or flange diameter changes on.
所用的通径取决于被检查管子的直径和重量。
The drift diameter used depends on the size and weight of the tubular being checked.
主要特点是一个绳子支架，无边缘，和底部联接。刻度表盘的直径是2“和管子的长度是48”
The 7612-06 features a strap hanger, no flange, and bottom connect. It has a 2" dial diameter and 48" capillary length.
分析了手工下向焊、半自动焊、自动焊及特种焊等焊接方法的特点，在选择焊接方法时应考虑管道直径、壁厚、管道长度、设计条件、管子级别等因素。
The features of manual downhill welding, semiautomatic welding, automatic welding and other welding technologies like butt flash welding and laser beam welding (LEW) and so on are analyzed.
分析了手工下向焊、半自动焊、自动焊及特种焊等焊接方法的特点，在选择焊接方法时应考虑管道直径、壁厚、管道长度、设计条件、管子级别等因素。
The features of manual downhill welding, semiautomatic welding, automatic welding and other welding technologies like butt flash welding and laser beam welding (LEW) and so on are analyzed.
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