It is about the ring screw thread smoke channel of the boiler shell type gas tube in the boiler field.

锅壳式烟管锅炉烟管内置水管的环形螺纹烟道，它涉及锅炉领域。

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Clay content of gas reservoir is high, the clay takes on the scaly, silk-thread form, bridging the pore and clogging or plugging the pore structure and throat.

储层内粘土矿物含量较高，伊利石呈片状、丝缕状桥接孔隙，造成对孔隙、喉道的堵塞或封隔，使孔隙的连通性进一步降低。

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The campers it rents are current models (23- and 28-footers) outfitted with high-thread-count linens, duvets, flat-screen televisions, power awnings, iPod docks, gas grills and rearview cameras to help with parking.

WSJ: Launch of Airstream 2 Go | Sites & Sightings