null 中文意思是什麼

音標 [nʌl]
null 解釋
adj. 形容詞 1. 無效力的，無束縛力的。
2. 無效的，無用的，無益的；無價值的。
3. 沒特徵[個性]的，沒表情的。
4. 〈罕用語〉不存在的，沒有的；零（位）的；空的。
n. 名詞 【數學】零，零位；空；【無線電】零訊號，微弱訊號。
a null indicator 零示器；零位指示器。
the null method 衡消法。
null and void 【律】無效；失效（This check is null and void. 本支票無效）。
vt. 及物動詞 使無效。

  1. The factor which is most detrimental to the formation of the null voltage is the capacitive coupling between the primary and secondary coils.

    對形成零電壓最有害的因素是初線圈和次級線圈之間的電容耦合。
  2. The city manager should accept the null hypothesis that there is no difference between the two methods of tax listing.

    市政府官員應該接受兩種征稅登記方法沒有差別這個無效假設。
  3. Specify the behavior when null values are concatenated

    指定在與空值連接時的行為。
  4. The null subset corresponds to the term 1.

    空集則對應于常數項1。
  5. Another section delimiter : 0x00 the null byte

    另一個節定界符： 0x00空值位元組
  6. As a result, the denominator and numerator should be about equal if the null hypothesis is true.

    因此，如果無效假設為真，那麼分母和分子應該差不多相等。
  7. A null-balance system is provided by balancing the magnetic forces by electrostatic forces.

    零位平衡系統是靠靜電力來平衡磁力而造成的。
  8. The null result of the michelson-morley experiment suggests that the effects of the ether are undetectable.

    邁克耳孫-莫雷實驗的否定結果使人想到，以太的效應是不能檢查到的。
  9. Column if it is not null, concatenates the middle initial and the values in firstname

    列不為空，則提取其第一個字母，將該中間名首字母與
  10. On null - additivity of generalized fuzzy valued choquet integrals

    積分的零可加性
  11. When the galvanometer reads zero the circuit is in the null-balance position.

    當檢流計的讀數為零時，電路處于零平衡位置。
  12. Rlean meat percentage is one of the most important economic traints in pig breeding programs. myostatin is a negative regulator of skeletal muscle growth. null or low activity of myostatin, individual muscle of mutant amimals would show a large and widespread increase in skeletal mass. myostatin null animals have significantly larger diameter or more quantity of fiber skeletal muscle. the phenotype was termed double muscling. in order to probe the relation between myostatin and high lean meat rate and plump - hipped trait, we sythesized the c ' 80 amino acids coding sequence of porcine myostatin and costructed the cloning and expressing vector of it

    肌生成抑制素（ myostatin ，即mstn ）是近幾年來（ mcpherrona . c等， 1997 ）發現的骨骼肌生長的負調控因子，它主要在骨骼肌中表達。其活性的喪失，會引起動物肌肉的過度發育，肌纖維直徑變大或肌纖維數增加，表現為雙肌癥狀。肌生成抑制素研究的突破將對豬、肉雞、肉牛等畜禽生產性能的提高具有特別重要的意義。
  13. The metaphase plate would thus be the null point between two equal but oppositely directed and acting groups of kinetochore tubules.

    中期板大概是兩個相等而方向相反的放射狀著絲點微管群之間的平衡點。
  14. The operator o is the null operator.

    算符O是零算符。
  15. A promise obtained by force is legally null.

    一個以武力獲得的契約在法律上是無效的。
  16. This check is null and void.

    本支票無效。
  17. He was null.

    他是一個毫不引人注意的人。
  18. The null result was directly related to a central postulate of the theory.

    零結果都直接與理論的中心假設相聯系。
  19. The device provides extreme sensitivity through a small range around the null point.

    此裝置在零點附近很小一段范圍內具有極高的靈敏度。
  20. The zero or null matrix denoted by 0 is definde as a matrix all of whose elements are zero.

    如果一個矩陣的所有元素都為零，則稱它為零矩陣。
分享友人
分享到 Line

分享到臉書