| umbilical |
The composite hose bundle between a dive location and a diver or bell, or between a diver and a bell, which supplies the diver or bell with breathing gas, communications, power, or heat as appropriate to the diving mode or conditions, and includes a safety line between the diver and the dive location.
출처: www.setonresourcecenter.com/cfr/29CFR/1910171.htm
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|---|---|
| umbra |
The darker part of a shadow where all the light is blocked.
출처: www.nksd.net/schools/nkhs/staff/john_daneau/cp_glo...
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| umbilical cord |
a cord consisting of three blood vessels suspended in a jelly-like substance which connects the fetus to the placenta. The umbilical cord connects to the baby at the umbilicus (the "belly button").
출처: www.abcbirth.com/lGlossary.html
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| umbo |
[clipeus ; toga, p. 1136, b.]
출처: www.ancientlibrary.com/smith-dgra/1220.html
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| umbra |
dark central zone created by an eclipse.
출처: school.discovery.com/curriculumcenter/solarsystem/...
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