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2. Eremophila weldii - Wikipedia

   en.wikipedia.org/wiki/Eremophila_weldii

   There are 5 overlapping egg-shaped to lance-shaped sepals which sometimes have a purplish tinge and are 2.5–5 mm (0.1–0.2 in) long and hairy on the inner surface. The petals are 9–18 mm (0.4–0.7 in) long and joined at their lower end to form a tube. The petal tube is lilac-coloured to purple, often whitish on the lower surface.

3. Shell-and-tube heat exchanger - Wikipedia

   en.wikipedia.org/wiki/Shell-and-tube_heat_exchanger

   The arrangement of tubes is a crucial design aspect. They are positioned in holes drilled in tube sheets, with the spacing between holes - known as tube pitch - being a key factor for both structural integrity and efficiency. [10] Tubes are typically organized in square or triangular patterns, and specific layouts are detailed in engineering ...

4. Pipe (fluid conveyance) - Wikipedia

   en.wikipedia.org/wiki/Pipe_(fluid_conveyance)

   Many industrial and government standards exist for the production of pipe and tubing. The term "tube" is also commonly applied to non-cylindrical sections, i.e., square or rectangular tubing. In general, "pipe" is the more common term in most of the world, whereas "tube" is more widely used in the United States.

5. Copper tubing - Wikipedia

   en.wikipedia.org/wiki/Copper_tubing

   While New Zealand has the same plumbing code as Australia and both use inch-based tubes denominated in millimeters, New Zealand's sizes are based on the "nominal bore" rather than "nominal diameter" (e.g., NZ size 20 measures 0.750 inches inside diameter, [10] as opposed to Australian DN20 which measures 0.750 inches outside diameter ...

6. Bicycle tire - Wikipedia

   en.wikipedia.org/wiki/Bicycle_tire

   A separate airtight inner tube enclosed by the tire supports the tire carcass and maintains the bead lock. An advantage of this system is that the inner tube can be easily accessed for a patch repair or replacement of the tube. The ISO 5775-2 standard defines designations for bicycle rims. It distinguishes between Straight-side (SS) rims

7. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   110–119 – Y8A 8-pin steel tube base; Rimlock B8A; 130–139 – Octal; 150–159 – German 10-pin with spigot; 10-pin glass with one big pin; Octal; 160–169 – Inline wire-ended Pencil tubes; Y8A 8-pin steel tube base; 170–179 – RFT 8-pin; RFT 11-pin all-glass gnome tube with one offset pin; 180–189 – Noval B9A; 190–199 ...