null

名词 n. 动词 v. 形容词 adj.
中文释义
英 /nʌl/    美 /nʌl/|/nʊl/|/nɐl/|/nal/

英文释义

名词 n.
  1. A non-existent or empty value or set of values.
  2. Zero quantity of expressions; nothing.
    — The kindes of Cyphars, (beſides the Simple Cyphars with Changes, and the intermixtures of Nvlles, and Nonsignificants) are many, according to the Nature or Rule of infoulding : Wheele-Cyphars, Kay-Cyphars, Dovbles, &c.
  3. Something that has no force or meaning.
  4. The null character; the ASCII or Unicode character (␀), represented by a zero value, which indicates no character and is sometimes used as a string terminator.
  5. The attribute of an entity that has no valid value.
    — Since no date of birth was entered for the patient, his age is null.
  6. One of the beads in nulled work.
  7. The null hypothesis.
动词 v.
  1. To nullify; to annul. archaic,transitive
    — Thy fair enchanted cup, and warbling charms / No more on me have pow’r, their force is null’d, / So much of Adders wiſdom I have learnt / To fence my ear againſt thy Sorceries.
  2. To return to the null position, setting, etc.
    — Three factors could ameliorate the effect of a bound input shaft and bearing. The first is the elasticity of the control system linkage that, against a definable load, will permit sufficient deformation of the otherwise rigid link feedback loop to null the MPCU servo valve. The second factor is the application of a load sufficient to break loose the binding between the input shaft and bearing. The third factor is a loss of torque of the bearing in the standby rudder actuator housing to permit the rotation of the bearing and shaft together within the housing to compensate for the bound shaft.
  3. To form nulls, or into nulls, as in a lathe.
  4. To crack; to remove restrictions or limitations in (software). slang,transitive
    — A nulled or a cracked plugin is basically a hacked version of a paid plugin that offers its premium functionalities for free.
形容词 adj.
  1. Having no validity; "null and void".
    — And however Firmilian and S. Cyprian might be deceived in the thinking hereticks quite loſt their orders ; yet in this they were untouched, that although their ſuppoſition was queſtionable, yet their ſuperſtructure was not meddled with, viz. That if they had been Lay-perſons, their Baptizations were null and invalid.
  2. Insignificant.
    — In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.
  3. Absent or non-existent.
    — The most recent attempt to contact Pioneer 10 was on 6-7 February 2003. But in this case, the Madrid station got conclusively null results after an assiduous search.
  4. Of the null set.
  5. Of or comprising a value of precisely zero.
  6. Causing a complete loss of gene function; amorphic.
  7. Neutral.
    — In normal operation, the input cranks to both the MPCU and standby rudder actuator will rotate to provide the servo valve command to the units, and the rudder will be hydraulically moved by the MPCU. The rudder movement is in turn fed back mechanically to both the MPCU and standby actuator systems so that when the rudder surface deflects to the position commanded by the pilot, the input cranks on both of the units will be returned to their null positions. Thus, there is a geometric relationship between the rudder position, the input crank of the MPCU, the torque tube, and the input crank of the standby rudder actuator that is retained during normal operation.

词形变化

nulls plural more null comparative most null superlative nulls present,singular,third-person nulling participle,present nulled participle,past nulled past

词汇关系

反义词
antinull non-null
衍生词
/dev/null alef null aleph-null conull dev null nonnull non-null persistent nullability nullable null anaphora null and void nullary null byte injection null character nullcline null determiner null device nullectomy nullform nullge null-grav null-homotopic null hypothesis nullification null infinity nulliparous nullish Null Island nullity nulliverse null matrix null modem null morpheme nullness null node nullo null object null path length null persistent null pointer null prefix null recurrence null recurrent null result null set null sign nullspace null-subject language null suffix null-terminated phosphonull pseudonull Rh-null
相关词
annul nulled work nil \0 ∅

词源

词源 1
Borrowed from Middle French nul, from Latin nūllus.
词源 2
Borrowed from Middle French nul, from Latin nūllus.
词源 3
Borrowed from Middle French nul, from Latin nūllus.
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