NFPA 318 requires 200 fpm across the cylinder neck and panels for pyrophoric gases; and a recently approved Uniform Fire Code Standard,80.106, requires a mechanicalventilation rate of 200 fpm across all unwelded fittings.

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NFPA 318 requires 200 fpm across the cylinder neck and panels for pyrophoric gases; and a recently approved Uniform Fire Code Standard,80.106, requires a mechanical ventilation rate of 200 fpm across all unwelded fittings.

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To determine where that position is, load and clamp unwelded parts into the machine.

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The velocity of ventilation across all unwelded fittings should be adequate to prevent the accumulation of silane in the case of a leak.

通過所有無焊接裝置的通風(fēng)速度必須足以防止在泄露情況下的硅烷積累。

For fatigue prediction of welded structure is faced not only the general problem of unwelded structure, but also the special difficulty resulted from weld arts. So, study of fatigue acts for wagon body is very important.

由于焊接結(jié)構(gòu)的疲勞壽命預(yù)測不僅要面對(duì)非焊接結(jié)構(gòu)必須面對(duì)的一般性困難jjzzz国产，而且還要面對(duì)焊接工藝本身所導(dǎo)致的特有的困難性黄色网站，因此，研究我國鐵路車輛焊接結(jié)構(gòu)的疲勞行為有重要意義日韩精品一区二区熟女视频。

A short unwelded area in the weld line extending through the entire pipe so that fluid will leak out through the area very slowly.

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A detection method for welding lines based on K-L algorithm is discussed. Infrared light source is applied to get high quality images of welding lines through CCD. Image template libraries for unwelded and welded lines are constructed and the welding line image is processed by K-L algorithm to match with the template libraries to judge if the welding line has been welded. The experiment shows that above method is effective with high precision and speed and it can be applied on real-time detection of welding lines.

提出計(jì)算機(jī)對(duì)所得圖像進(jìn)行濾波和圖像分割，討論了K-L算法的原理及其在紅外焊縫圖像檢測中的應(yīng)用肏屄视频在线免费观看；以紅外光源照射焊縫无码精品视频仙踪林，通過CCD攝取焊縫的圖像，建立已焊和未焊的圖像模板庫亚洲精品国产欧美一二，采用K-L算法對(duì)焊縫圖像進(jìn)行處理国产99视频精品免费时看古装，并與模板庫進(jìn)行比較，得出焊縫是否焊接的結(jié)論美国乱滛免费视频；試驗(yàn)結(jié)果表明，該方法檢測精度高www18岁，檢測速度快久久超碰男人的天堂，可以實(shí)時(shí)運(yùn)用于對(duì)手工電弧焊的焊縫質(zhì)量檢測中。

Three principal features of the micromorphology of flake fracture are trasgranular quasicleavage, intergranular wave-like stripes and elongated smooth "unwelded" micropores.

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