Steam locomotives were first developed in the United Kingdom during the early 19th century and used for railway transport until the middle of the 20th century.
A milling machine removes material from a work piece by rotating a cutting tool cutter and moving it into the work piece. Milling machines, either vertical or hori- zontal, are usually used to machine flat and irregularly shaped surfaces and can be used to drill, bore, and cut gears, threads, and slots.
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授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
---|---|---|---|---|---|
標準授權 | XS | 438 x 480 | JPG | 13 | |
標準授權 | S | 730 x 800 | JPG | 15 | |
標準授權 | M | 1898 x 2080 | JPG | 18 | |
標準授權 | L | 2136 x 2340 | JPG | 20 | |
標準授權 | XL | 2701 x 2960 | JPG | 22 | |
標準授權 | MAX | 3309 x 3626 | JPG | 23 | |
標準授權 | TIFF | 2684 x 2942 | TIF | 39 | |
進階授權 | UEL | 3309 x 3626 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
UEL
標準授權 | 438 x 480 px | JPG | 13 點 |
標準授權 | 730 x 800 px | JPG | 15 點 |
標準授權 | 1898 x 2080 px | JPG | 18 點 |
標準授權 | 2136 x 2340 px | JPG | 20 點 |
標準授權 | 2701 x 2960 px | JPG | 22 點 |
標準授權 | 3309 x 3626 px | JPG | 23 點 |
標準授權 | 2684 x 2942 px | TIF | 39 點 |
進階授權 | 3309 x 3626 px | JPG | 88 點 |