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labium    
n. 唇,阴唇,下唇

唇,阴唇,下唇

labium
n 1: a liplike structure that bounds a bodily orifice
(especially any of the four labiate folds of a woman's
vulva)

Labium \La"bi*um\, n.; pl. L. {Labia}, E. {Labiums}. [L.]
1. A lip, or liplike organ.
[1913 Webster]

2. The lip of an organ pipe.
[1913 Webster]

3. pl. (Anat.) The folds of integument at the opening of the
vulva.
[1913 Webster]

4. (Zool.)
(a) The organ of insects which covers the mouth beneath,
and serves as an under lip. It consists of the second
pair of maxill[ae], usually closely united in the
middle line, but bearing a pair of palpi in most
insects. It often consists of a thin anterior part
(ligula or palpiger) and a firmer posterior plate
(mentum).
(b) Inner margin of the aperture of a shell.
[1913 Webster]


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  • Helium - Wikipedia
    Helium (from Ancient Greek: ἥλιος, romanized: helios, lit 'sun') is a chemical element; it has symbol He and atomic number 2 It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table
  • Helium (He) - Periodic Table
    Helium (He) Helium is the 2nd element in the periodic table and has a symbol of He and atomic number of 2 It has an atomic weight of 4 00260 and a mass number of 4 Helium has two protons and two neutrons in its nucleus, and two electrons in one shell It is located in group eighteen, period one and block s of the periodic table
  • Helium - Element information, properties and uses | Periodic Table
    Element Helium (He), Group 18, Atomic Number 2, s-block, Mass 4 003 Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images
  • Helium Facts - Atomic Number 2 or He
    Helium is a chemical element with the symbol He and atomic number 2 It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table
  • Helium | He (Element) - PubChem
    Helium is a chemical element with symbol He and atomic number 2 Classified as a noble gas, Helium is a gas at 25°C (room temperature) 1s 2 B Cordero, V Gómez, A E Platero-Prats, M Revés, J Echeverría, E Cremades, F Barragán, S Alvarez, Dalton Trans 2008, 21, 2832-2838 DOI:10 1039 b801115j PMID:18478144 1 S 0
  • Atomic Number of Helium He
    Atomic Number of Helium is 2 Chemical symbol for Helium is He Number of protons in Helium is 2 Atomic weight of Helium is 4 002602 u or g mol Melting point of Helium is -272,2 °C and its the boiling point is -268,9 °C
  • Periodic Table of Elements: Los Alamos National Laboratory
    While helium normally has a 0 valence, it seems to have a weak tendency to combine with certain other elements Means of preparing helium difluoride have been studied, and species such as HeNe and the molecular ions He+ and He++ have been investigated
  • Helium atom - Wikipedia
    A helium atom is an atom of the chemical element helium Helium is composed of two electrons bound by the electromagnetic force to a nucleus containing two protons along with two neutrons, depending on the isotope, held together by the strong force
  • Helium | Definition, Properties, Uses, Facts | Britannica
    Helium is a chemical element, an inert gas of Group 18 (noble gases) of the periodic table The second lightest element, helium is a colorless, odorless, and tasteless gas that becomes liquid at -268 9 degrees Celsius
  • Helium (He) - Periodic Table
    Helium is a chemical element of the periodic table with chemical symbol He and atomic number 2 with an atomic weight of 4 0026 u and is classed as noble gas and is part of group 18 (noble gases) Helium is gas at room temperature





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