porosities

In this paper, the effect of HIP on the porosities and properties of two spray formed superalloys, K17 and GH742, has been investigated.

研究了热等静压工艺对喷射成形K17和GH742两种高温合金显微疏松和室温拉伸性能的影响。

In addition, the rapidly decreasing stages of source rock porosities only match their early oil generation.

另外, 泥岩孔隙度快速降低时仅对应于生烃的早期阶段.

Intermediate arrays have porosities falling between these limits.

中间的排列方式,孔隙率介于这两个值之间.

unhealed porosities and free surface of dendrites with crystalline steps were occasionally observed in aluminium alloy forgings.

铝合金锻件中有时有未锻合的疏松和残留的枝晶自由表面，并保留有原始的结晶台阶。

Application of extended time average equation in the prediction of porosities of clastic reservoir rocks

扩展时间平均方程在碎屑岩储层孔隙度预测中的应用

When castings solidify as a sequence manner and squeeze force effectively acts on the surface of the liquid metal, the shrinkage porosities in the castings are eliminated and mechanical properties are increased obviously.

采取措施使铸件以顺序方式凝固，并使挤压力有效地作用在液体金属上，可以消除大高径比铸件内的缩松，获得高力学性能的铸件。

Cause Study of Porosities Formation in Semiautomatic CO_2 Arc Welding by One Side with Ceramic Backing Strip PROTECTION OF MARINE SHIPS: STATE OF THE ART IN CHINA

船舶焊接CO2气体保护单面焊气孔成因探讨

Porous silicon layers of different thickness and porosities are obtained using anodization method via controlling the hydrofluoric acid concentration, current density and time. The thick porous silicon layers are oxidized by a two-step oxidation method.

实验过程中通过控制阳极氧化反应中HF溶液的浓度、电流密度和反应时间形成了不同厚度和孔隙度的多孔硅厚膜，并采用两步氧化的方法得到氧化多孔硅厚膜。

The unhealed porosities might be a possible source of flake formation.

这种空隙很可能是白点断口的一种断裂源.

In the lignite matrix , the porosities are mainly and macroporosities.

褐煤基质中的孔隙以中孔、大孔为主.

It is well known that bed porosities are greater near the bounding surface.

众所周知,靠近边界表面的床层自由空间率较大.

CO 2 gas was used as the shielding gas to eliminate porosities in deep penetration laser welding of low carbon steel in this paper.

采用CO2作为保护气体消除大熔深激光焊接低碳钢时易发生的气孔问题，并对比研究了CO2和Ar气保护条件下12mm厚低碳钢板激光焊缝的组织和韧性。

Using Different Logging Apparent Porosities to Distinguish Carbon Dioxide from Methane

利用测井视孔隙度差异识别二氧化碳和烃类气

However, it is easy to form porosities during traditional die casting because of its wide solidification temperature interval.

但是其凝固温度范围宽，在传统压铸生产时容易形成缩松。

The extended time average equation, a combined model introduced in this paper, can predict the porosities of muddy sand reservoirs only by absolute seismic velocities before exploratory drilling, and provide reliable quatitative information for an integrated evaluation of clastic reservoir quality.

本文提出的扩展时间平均方程组合模型，能够在钻井之前仅根据地震绝对速度，预测出泥质砂岩储层的孔隙度，为储层性能的综合评价提供有力的依据。

We also make comparison and analysis between the two porosities: the Socialism at Its Early Stage, and the Socialism of Primary Stage.

并且对初级阶段理论两个重要命题：社会主义初级阶段和初级阶段社会主义进行了比较分析。

Formation and Elimination of Porosities and Cracks on the Head Face of Valve Tappet

气门挺杆端面气孔裂纹形成原因分析及其消除措施

Using LLW setup and a C-scan system, defects in composite laminates suchas delaminations and porosities were successfully detected.

采用泄漏兰姆波C扫描技术，可成功地检出复合材料层板中的分层及孔隙等缺陷。