查询词典 crossing-over

In crossing of the 8 autotetraploidy rices (Oryza sativa, 2n=4x=48), APIV(4), IR36(4), Zixuedao(4), Ce 64(4), Minghui 63(4), IR28(4), Ce 90(4) and Gui 99(4) used as the females, with Pennisetum alopecuroides (2n=2x=18) used as the males, the seeds were obtained, but no seed was got in the crosses of the 3 diploidy rices (Oryza sativa, 2n=2x=24), APIV(2), Ce 90(2) and Zixuedao(2) used as the females, with Pennisetum alopecuroides.

利用APIV(4)、IR36(4)、紫血稻(4)、测64(4)、明恢63(4)、IR28(4)、测90(4)和桂99(4)等8个同源四倍体水稻(Oryza sativa， 2n=4x=48)为杂交母本，以狼尾草(Pennisetum alopecuroides， 2n=2x=18)为杂交父本进行杂交，获得了实粒种子。但是，在以APIV(2)、测90(2)和紫血稻(2)这3个二倍体水稻(Oryza sativa， 2n=2x=24)为杂交母本，以狼尾草为杂交父本的杂交组合中却没有获得实粒种子。

A sensorless BLDC motor system with novel rotor position detection method based on back electromotive force and zero crossing is presented.

通过仿真结果证明，实时的改变PID参数值能够提高电机控制的性能，适应高精度伺服系统的需求。

He lost his balance when crossing the bridge and fell into the river.

过桥的时候因失去了平衡而掉进了河里。

As we have learned, had arrived to make sure activated carbon puts in smoothly 25 days among filter, total fleet of Heilongjiang province armed police is close 1000 officers and soldiers from 24 days 17 when to 25 days of before dawn 4 when, day and night endlessly, many tons of 1000 in crossing 16 filter anthracitic filter expects all Qing Dynasty goes out. 10 when make 30 minutes, the reporter sees, as a result of excessive overworked, a lot of people in them were leaning on baluster to be asleep.

据了解，为了保证25日活性炭顺利投放到过滤池当中，黑龙江省武警总队近千名官兵从24日17时至25日凌晨4时，昼夜不休，将16个过滤池中的1000多吨无烟煤滤料(主要分为以进水过滤的粒状材料与物理分离的过滤介质两大类)全部清出。10时30分许，记者看到，由于过度劳累，他们中的很多人都倚着栏杆睡着了。

Unsuspecting national television stations broadcast reports on an attempt by the man, who spoke only in English and wore an orange bandana, to claim a place in the record books by crossing Russia with no money or travel documents.

据路透社5月7日的报道，多家俄罗斯国营电视台在毫无戒备之心的情况下对该名男子的此种举动进行了报道，此人在节目中只说英语且头缠一条橙色丝质大手帕，他宣称自己打算在不带任何现金和旅行证件的情况下横穿俄罗斯全境以便在相关世界纪录的名单上占有一席之地。

It was a long yellowish snake crossing the road under a banyan tree.

一条土黄色的长蛇在穿越一棵棵菩提树下的路。

Orcs are seen crossing the bridge of Barad Dur To stand against the might of Sauron and Saruman, and the union of the two towers?

有谁能对抗魔多和萨鲁曼，以及双城结盟的力量？

Blood samples from 23 Huacaya alpacas ,3 males and 20 females ,were used to study chromosome karyotype ,so as to provide some effective cytogenetics basis for the selectioiymprovement by crossing and disease diagnosis of alpacas ,and genetic mechanisms of sex determination. Peripheral blood lymphocyte culture was used to prepare chromosome. Methods of trypsase-EDTA and BSG (Barium hydroxide / Saline / Giemsa)were used for G-banding and C-banding respectively . The results showed as follows:Firstly , the number of diploid chromosomes was in the alpacas 2n=74,with the karyotype 74, XY and 74, XX for males and females respectively.

为了从选种、杂交改良、疾病诊断以及性别决定的遗传机制等方面为羊驼的繁育与推广提供更为有效的细胞遗传学资料，本试验采用外周血淋巴细胞培养法制备染色体，分析了23只胡阿基亚型羊驼(Huacaya alpaca，雌20只，雄3只)的染色体及其核型，并通过BSG法(Barium hydroxide／Saline／Giemsa，氢氧化钡-盐溶液-吉姆萨，也即Sumner BSG法)与胰酶-EDTA法分别对羊驼的C-分带和G-分带进行分析，结果表明：(1)羊驼二倍体染色体数目为2n=74，雄性羊驼核型为74，XY；雌性羊驼核型为74，XX。

You have to do is keep on crossing the barrier to escape.

你要做的就是不停地越过障碍逃跑。

The object of this game is to be the first to kick your beanbag around the inside of the circle without crossing its border.

的对象，此游戏首先踢你beanbag周围的圆圈内没有越过其边界。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了