单管或多管试漏时,因打压介质充填量小,若管束有漏点,易于从压力表上快速显现出压降。
Single - or multiple leakage test, by suppressing media filling quantity is small, if the tube bundle leakage, easy to from the pressure gauge on the fast show pressure drop.
结论:在侧向加压法根管充填中,试尖可明显改善充填质量。
Conclusions: the trial point test may improve the quality of obturation with lateral compaction.
在数控弯管工艺知识库的基础上,通过运用CBR方法,得到了弯管回弹角,减少了试弯次数,提高了数控弯管效率。
Based on this process knowledge database, the springback Angle could be obtained by using CBR which makes the number of experiment reduce and elevations the efficiency of nc tube bending.
本文介绍了广东液化天然气输气干线工程应用的清管测径试压技术。
This paper introduced the technology of pigging, diameter measuring & pressure testing for Guangdong LNG trunk-line.
分析表明:该管线的变形失效是在加套管过程中工艺安排不当所致,在施工过程的试压期间引起了内管的外压失稳,使内管产生永久的变形。
The impact of some key construction links on destabilization of the external pressure of the inner pipes was analyzed and verified in the course of pope-line rebuilding.
结果表明:(1)供试土壤在相对水气压达72—75%时,开始明显呈现出毛管凝聚作用;
The results are shown as follows:1. When the relative vapor pressure reached to 72-75%, capillary moisture condensation began to appear in the tested soil.
用北京室内饲养的麦长管蚜以16种新老农药品种用点滴法进行了敏感水平测定,建立了麦长管蚜对16种供试农药的毒力基线。
Susceptibility levels of grain aphids reared in the insectary to 16 pesticides are examined in Beijing and the toxicity base lines have been established.
所述的填料置满于堵帽、被试压管道、管卡子所围成的空间内。
The space defined by the plug cap, pipe clamp and test pipeline is filled with said filler.
试尖是检查根管预备效果及保障根管充填质量的较好方法。
The quality of obturation was analyzed based on with and without testing the trial point.
当弯曲试板上的最大应变等于波纹管的最大局部应变时,板的弯曲疲劳试验寿命即可代替波纹管的试验寿命。
The fatigue test of the bellows expansion joints is replaced by the bent fatigue test of plates when the maximum strain of bent test plates equals to the local strain of bellows expansion joints.
当弯曲试板上的最大应变等于波纹管的最大局部应变时,板的弯曲疲劳试验寿命即可代替波纹管的试验寿命。
The fatigue test of the bellows expansion joints is replaced by the bent fatigue test of plates when the maximum strain of bent test plates equals to the local strain of bellows expansion joints.
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