| 释义 |
Definition of singlet in English: singletnoun ˈsɪŋɡlɪtˈsɪŋɡlət 1British A sleeveless garment worn under or instead of a shirt; a vest. 〈主英〉（无袖的）汗衫，背心 Example sentencesExamples - Equally as beautiful as his womenswear, this featured plain white singlets studded with gold sequins, low-slung cream trousers and kimono print shirts.
- Winter has settled in, you're not wearing a singlet under your business shirt and you have your first sneeze… she thinks you caught pneumonia and you're going to die.
- Tommy is wearing a baseball cap, a singlet and combat shorts, revealing several tattoos.
- Others had on only singlets and cotton trousers as they jumped into the water.
- Alas, after a while, the sight of board shorts, singlets, jandals and sunglasses will make you wince.
2Physics
A single unresolvable line in a spectrum, not part of a multiplet. 〔物理〕单（谱）线 Example sentencesExamples - Superimposing such a diffractive structure on an aspheric surface yields an achromatic singlet whose spherical and chromatic aberrations are corrected.
- The singlet is detectable as a quintet at room temperature in methemoglobin with identical spectral features to those of the well characterized tyrosyl radical in photosystem II.
- To break supersymmetry using the F-term, one can add chiral multiplets that transform as singlets under the gauge symmetries in the theory.
- 2.1 A state or energy level with zero spin, giving a single value for a particular quantum number.
零自旋（核）能极 Example sentencesExamples - Its superconductivity is often assumed to be unconventional in that the Cooper pairs are not in a spin singlet state with s-wave symmetry, as with conventional superconductors.
- Energy can be transferred from the singlet state to the triplet state via intersystem crossing.
- A small singlet-triplet energy gap is known to favor intersystem crossing.
- The reorganizational energy of the singlet ET was also calculated from the temperature-dependent data and found to be 0.89 eV.
- Do aggregates of A2E have a higher singlet-oxygen quantum yield rather than monomers?
3Chemistry
An atomic or molecular state in which all electron spins are paired. 〔化〕单（线）态 as modifier singlet oxygen Example sentencesExamples - It can thus be regarded as a simultaneous excitation of two triplets, whose coupling generates an overall singlet state.
- And where does the singlet oxygen, the energy source, come from?
- However, reactive oxygen species generated by UVA radiation, particularly singlet oxygen, can also damage nucleic acids.
- The origin of the initial spike observed upon detection of singlet oxygen luminescence remains unresolved.
- The study of the excited states properties has shown that its photoreactivity in neutral aqueous medium is singlet initiated.
OriginMid 18th century (originally denoting a man's short jacket): from single (because the garment was unlined) + -et1, on the pattern of doublet. Definition of singlet in US English: singletnounˈsiNGɡlətˈsɪŋɡlət 1British A sleeveless garment worn under or instead of a shirt. 〈主英〉（无袖的）汗衫，背心 Example sentencesExamples - Winter has settled in, you're not wearing a singlet under your business shirt and you have your first sneeze… she thinks you caught pneumonia and you're going to die.
- Others had on only singlets and cotton trousers as they jumped into the water.
- Tommy is wearing a baseball cap, a singlet and combat shorts, revealing several tattoos.
- Alas, after a while, the sight of board shorts, singlets, jandals and sunglasses will make you wince.
- Equally as beautiful as his womenswear, this featured plain white singlets studded with gold sequins, low-slung cream trousers and kimono print shirts.
2Physics
A single unresolvable line in a spectrum, not part of a multiplet. 〔物理〕单（谱）线 Example sentencesExamples - To break supersymmetry using the F-term, one can add chiral multiplets that transform as singlets under the gauge symmetries in the theory.
- Superimposing such a diffractive structure on an aspheric surface yields an achromatic singlet whose spherical and chromatic aberrations are corrected.
- The singlet is detectable as a quintet at room temperature in methemoglobin with identical spectral features to those of the well characterized tyrosyl radical in photosystem II.
- 2.1 A state or energy level with zero spin, giving a single value for a particular quantum number.
零自旋（核）能极 Example sentencesExamples - Do aggregates of A2E have a higher singlet-oxygen quantum yield rather than monomers?
- Energy can be transferred from the singlet state to the triplet state via intersystem crossing.
- The reorganizational energy of the singlet ET was also calculated from the temperature-dependent data and found to be 0.89 eV.
- Its superconductivity is often assumed to be unconventional in that the Cooper pairs are not in a spin singlet state with s-wave symmetry, as with conventional superconductors.
- A small singlet-triplet energy gap is known to favor intersystem crossing.
3Chemistry
An atomic or molecular state in which all electron spins are paired. 〔化〕单（线）态 as modifier singlet oxygen Example sentencesExamples - The study of the excited states properties has shown that its photoreactivity in neutral aqueous medium is singlet initiated.
- The origin of the initial spike observed upon detection of singlet oxygen luminescence remains unresolved.
- It can thus be regarded as a simultaneous excitation of two triplets, whose coupling generates an overall singlet state.
- And where does the singlet oxygen, the energy source, come from?
- However, reactive oxygen species generated by UVA radiation, particularly singlet oxygen, can also damage nucleic acids.
OriginMid 18th century (originally denoting a man's short jacket): from single (because the garment was unlined) + -et, on the pattern of doublet. |