查询词典 four

Sequence comparison and phylogenetic analysis of mtDNA 16S rRNA and COI gene fragments in four species of razor shell were made using PCR and direct sequencing. The four species are Solen grandis Dunker, Solen strictus Gould and Cultellus attenuatus Dunker, Sinonovacula constricta.

本实验对帘蛤目四种蛏类大竹蛏，长竹蛏和小刀蛏和缢蛏的线粒体16S rRNA和COI基因片段部分序列进行了比较并对其系统学进行了初步研究。

Four years later, above, when he was re-elected, the number doubled to four.

4年后，上述情况，当他再次当选，人数翻了一番，达到4倍。

B with 4-4-3-2 too weak to open one notrump and lacking four-card support, rebid in a four-card suit at the one level when possible

b持4-4-3-2的牌太弱而不能开叫1NT且缺乏4张支持时，则尽可能在一阶叫出4张花色

To make a summary of the differences among the Four Gospels, the author has found four points of view—background of evangelists, different scripture recordation, characteristics and genealogy.

作者认为可以通过四个角度概括四福音的不同——作者的背景、经文的差异、特点和家谱。

According to this method,four different 11-step algorithms with four different window functions which are rectangular window,triangle window,hanning window,and blackman window are designed. Analysis and simulation show that hanning window and blackman window with small lobes are less sensitive to errors. Seven different algorithms with the same phase shifting interval π/2 are designed by hanning window function,whose phase shifting steps are separately 5,11,15,39,51,76 and 101 steps.

选择矩形窗、三角窗、hanning窗和blackman窗生成4种11步移相算法，对振动误差和相移误差的分析验证了旁瓣小的hanning窗和blackman窗生成的算法对误差的灵敏度要小；再选择hanning窗生成了移相间距为π/2的5，11，15，39，51，76和101步7种移相算法，仿真验证了步数越多主瓣越小，对振动抑制能力越好，但需要更高的微位移器移动精度来获得有效的干涉条纹。

By the above four criteria, it is proved that there does not exist a line parameterization which could satisfy all the four criteria at the same time, and that the line parameterization, formulated as c= ax+y, a∈-a0 ,a0, where a0 is an arbitrary positive number, can not only satisfy the uniqueness, boundedness, and recursiveness criteria, but also achieve the best goodness to the uniformness one.

根据上述四条标准，证明了不存在同时满足这四条标准的直线参数化方式t和直线参数化方式c= ax+y， a∈-a0 ，a0不但满足唯一性、有界性和递归性标准，而且可以获得均匀性标准的最优近似。

If Myrians want another four years like the past four years, they should reelect Governor Winslow.

如果 Myria 的居民希望未来四年和过去四年一样，他们就应该再次选举 Winslow 。

Homer, has been mayor of a city in which only a small number of new businesses have opened. If Myrians want another four years like the past four years, they should reelect Governor Winslow.

今天 Sauria 那些既便尝试了低脂肪高碳水化合物饮食的人中也存在的高血压，肥胖和心脏病的较高发病率进一步证明了 Sauria 权威营养学家是错误的。

If Myrians want another four years like the past four years, they should reelect Governor Winslow.187The following appeared in a memo from a member of the Clark City School Board.

如果Myria的居民希望未来四年和过去四年一样，他们就应该再次选举Winslow。

The calibration of a four state four port reflectometer performed with the presented method and unimproved method shows good agreement between computing results.

对同一响应方程，可以采用不同的校准方法来确定反射计的系统复常数。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。