英语词汇“null”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

WORD ORIGINnull

Origin:

1500-1600 Old French nul, from Latin nullus ‘not any’

EXAMPLES FROM THE CORPUS

Dealing with null values is one of the problems that extensions to Codd's original relational model do take into account.
Figure 8.5 Projections of two neighbouring null geodesics on to the plane.
Functions have to return an answer, but the value returned by this function is a null string.
He decided that the marriage was null and void.
The null hypothesis that can then be tested by using the F distribution as explained in chapter 3.
The researcher may actually expect that the null hypothesis is faulty and should be rejected in favor of the alternative H1.
The use of the null hypothesis does have one very practical use.
This gives variables of exactly known distribution, so that we can calculate the significance of any given peak under the null hypothesis.

Longman Language Activatordocuments, tickets etc that can no longer be used► invalid

a ticket, passport etc that is invalid cannot legally be used and it will not be officially accepted: · I'm afraid your ticket is invalid on this route.· This passport is invalid. Look at the expiry date.

► out of date

a ticket, passport etc that is out of date cannot be used because the time during which it could be used has passed: · Are you aware that your passport is out of date?days/months/years out of date: · He tried to get on the train using a pass that was months out of date.

► null and void

a document such as a contract that is null and void has no legal force and cannot be used for any purpose - used in legal contexts: · If the contract has not been signed by witnesses, it is considered null and void.

COLLOCATIONS FROM THE ENTRY► declared null and void

The contract was declared null and void.

COLLOCATIONS FROM THE CORPUSNOUN► hypothesis

· This gives variables of exactly known distribution, so that we can calculate the significance of any given peak under the null hypothesis.· The researcher may actually expect that the null hypothesis is faulty and should be rejected in favor of the alternative H1.· The null hypothesis that can then be tested by using the F distribution as explained in chapter 3.· The use of the null hypothesis does have one very practical use.· When this indicated a probability of less than 0.05 for the null hypothesis Student-Newman-Keuls analyses were performed to determine which values differed significantly.· Departures from the null hypothesis were assessed at the 5% significance level.· For the short observations, the null hypothesis is that only Poisson noise is present.· The null hypothesis of no heterogeneity can not be rejected in any of the variants of the model.

PHRASES FROM THE ENTRY► null and void

If the contract has not been signed by witnesses, it is considered null and void.
The elections were declared null and void.
Also null and void is any stipulation releasing a partner from playing an active role in running the business.
As far as he was concerned, all of the points of agreement that had already been reached were null and void.
He decided that the marriage was null and void.
My effective vote could be my first preference vote, in which case all my other preferences are null and void.
On Oct. 28 the Council declared this clause unconstitutional and therefore null and void.
The contract was declared null and void.
Went in there, saw the judge, and he say the deed was null and void.
Yet it was Shirley Place who kept the interview firmly null and void.

单词	null
释义	nullnull /nʌl/ adjective Word Origin WORD ORIGINnull Origin: 1500-1600 Old French nul, from Latin nullus ‘not any’ Examples EXAMPLES FROM THE CORPUS Dealing with null values is one of the problems that extensions to Codd's original relational model do take into account. Figure 8.5 Projections of two neighbouring null geodesics on to the plane. Functions have to return an answer, but the value returned by this function is a null string. He decided that the marriage was null and void. The null hypothesis that can then be tested by using the F distribution as explained in chapter 3. The researcher may actually expect that the null hypothesis is faulty and should be rejected in favor of the alternative H1. The use of the null hypothesis does have one very practical use. This gives variables of exactly known distribution, so that we can calculate the significance of any given peak under the null hypothesis. Thesaurus Longman Language Activatordocuments, tickets etc that can no longer be used► invalid a ticket, passport etc that is invalid cannot legally be used and it will not be officially accepted: · I'm afraid your ticket is invalid on this route.· This passport is invalid. Look at the expiry date. ► out of date a ticket, passport etc that is out of date cannot be used because the time during which it could be used has passed: · Are you aware that your passport is out of date?days/months/years out of date: · He tried to get on the train using a pass that was months out of date. ► null and void a document such as a contract that is null and void has no legal force and cannot be used for any purpose - used in legal contexts: · If the contract has not been signed by witnesses, it is considered null and void. Collocations COLLOCATIONS FROM THE ENTRY► declared null and void The contract was declared null and void. COLLOCATIONS FROM THE CORPUSNOUN► hypothesis · This gives variables of exactly known distribution, so that we can calculate the significance of any given peak under the null hypothesis.· The researcher may actually expect that the null hypothesis is faulty and should be rejected in favor of the alternative H1.· The null hypothesis that can then be tested by using the F distribution as explained in chapter 3.· The use of the null hypothesis does have one very practical use.· When this indicated a probability of less than 0.05 for the null hypothesis Student-Newman-Keuls analyses were performed to determine which values differed significantly.· Departures from the null hypothesis were assessed at the 5% significance level.· For the short observations, the null hypothesis is that only Poisson noise is present.· The null hypothesis of no heterogeneity can not be rejected in any of the variants of the model. Phrases PHRASES FROM THE ENTRY► null and void If the contract has not been signed by witnesses, it is considered null and void. The elections were declared null and void. Also null and void is any stipulation releasing a partner from playing an active role in running the business. As far as he was concerned, all of the points of agreement that had already been reached were null and void. He decided that the marriage was null and void. My effective vote could be my first preference vote, in which case all my other preferences are null and void. On Oct. 28 the Council declared this clause unconstitutional and therefore null and void. The contract was declared null and void. Went in there, saw the judge, and he say the deed was null and void. Yet it was Shirley Place who kept the interview firmly null and void. null and void law an agreement, contract etc that is null and void has no legal force SYN invalid: The contract was declared null and void.
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