| 1. | Standard specification for cold - drawn buttweld carbon steel mechanical tubing
冷拉对缝焊碳素钢机械管的标准规范 |
| 2. | Standard specification for wrought high - strength low - alloy steel butt - welding fittings
锻制高强度低合金钢对缝焊接配件标准规范 |
| 3. | But it is difficult to detect fracture strip by a single subject or method
但利用单一的学科或单一的方法对缝洞进行预测往往是很困难的。 |
| 4. | Standard specification for wrought - carbon steel butt - welding piping fittings with improved notch toughness
具有改进的切口韧性的对缝焊锻制碳素钢管配件标准规范 |
| 5. | Steel tubes . unalloyed or alloy steel butt welding elliptic caps with quality requirements . dimensions . technical delivery conditions
钢管.有质量要求的非合金或合金钢制对缝焊接椭圆底座.尺寸.交货技术条件 |
| 6. | If one speaks against the wall at one end , another can hear his voice at the other end of it
它是一堵磨砖对缝的围墙，若两人面壁分别站在东西墙根，人对墙低声说话，声波沿墙壁连续反射前进，另一个可以清晰听见。 |
| 7. | Secondly , the paper discusses and analyses the characteristic of the seismic wavefield of fractural reservoir and the influence caused by fracture density , property of the filled material , the strike of fracture and so on . and then discusses the problem of the design of the fractured model
其次，在认识了缝洞密度、缝洞中充填物的性质和裂缝走向等因素对缝洞储层地震波场特征的影响之后讨论了缝洞储层中缝洞模型的建立问题。 |
| 8. | The paper discusses the probability of fracture detection by seismic method firstly , and then analyses seismic reflected wave character of fracture - cave stratum . at last , the paper validate that dynamical characteristic of seismic wave is more sensitive to fracture than kinetic characteristic
本文首先论述了地震方法对于缝洞发育带的可识别性，并且对缝洞储层的波场特征进行了分析，验证了在对缝洞进行识别方面，动力学特征优于运动学特征。 |
