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tetrad n.1.四個;四個一組的東西。2.【生物學】四合子,四分...

tetradactyl

Strong negative 8 eu shows the granites are high evolved granite . ( 6 ) the tetrad effect of ree and the obvious fractionation between k - rb , y - ho , zr - hf , nb - ta , and sr - eu in the dajishan granites indicate that , the aqueous fluid pays an important role in the evolution of the granites , as well as indicate that there exist enough interaction between peraluminous melt and aqueous magmatic fluid . furthermore the fluorine played a very important role in this process ( 6 )大吉山花崗巖類稀士元素具有“四重效應”配分的特點以及微量元素對kjrb 、 y / ho 、 zr艦f以及nb / ta發生明顯分異,暗示在花崗巖巖漿的演化過程中,經歷了充分的流體一熔體作用,同時分異出大量富含f 、 w等礦化劑元素和成礦元素的熱液流體,致使鎢礦的形成。

Results : there are 20 cases of fchd , in which 2 cases is of endocardial cushion defect , 3 of atrial septa defect , 2 of single atrium , 2 of single ventricle , 2 of double outlet of right ventricle , 2 of ebstein ' s malformation , 5 of interventricular septal defect , 2 of fallot ' s tetrad . 16 cases were diagnosed by ultrasonography and 4 cases were missed diagnosis in prenatal 結果:發現20例胎兒有先天性心臟缺陷,其中完全性心內膜墊缺損2例,原發孔性房間隔缺損3例,單心房、單心室、右室雙出口、三尖瓣下移畸形各2例,室間隔缺損5例,法樂四聯癥2例。

3 . the development of the anther wall follows the basic type . cytokinesis in the microspore mother cell is of the successive type . the arrangement of microspore in tetrad is tetrahedral . mature pollen grain is of 2 - celled type . the anther has 4 four rooms , accidentally seen six or seven rooms 花藥壁的發育為基本型,小孢子減數分裂為連續型,小孢子四分體為四面體型,成熟花粉為二細胞型。花藥多為四室,偶見六室和七室。 4

It was thought in the past that it was a significant part of the so - called “ narcoleptic tetrad ” , but recent surveys of non - clinical populations , such as ours , suggest that the prevalence may be as high among the general population as among diagnosed narcoleptics 在過去它常被認為是嗜睡癥的重要臨床癥狀,但最新的關于非臨床人群的調查表明,正常人群中患有睡眠癱瘓癥的比例與確診嗜睡癥人群中的比例相當。

In order to recognize presumptive sidechain interactions , the purpose of the statistical analysis is to find frequently occurring common parts of amino acid polyads , including diads , triads , tetrads and 這種共振效應可推論到酶催化的機制,蛋白質的構象被認為是處在每秒109次的漲落狀態之中

The guests have more priority in our hotel than in other three - star hotels . the hotel has 375 rooms . among them , there are 15 tuites , 228 standard rooms , 30 singles , 15 sriple rooms and 10 tetrad rooms 其中套間15間,標準間228間,單人間30間,三人間15間,四人間10間,普通兩人房54間。

At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad 此時每條染色體由一對染色單體構成,這兩條聯合的染色體稱為四分體。

The tetrads eventually shrivel or are resorbed . 這種四分體最終萎縮或被再吸收。