双叶的

Preliminary bioassay showed that most of title compounds had good herbicidal activity, for example, 9a, 9b, 9c, 9f, 9g and 9h exhibited more than 90% inhibition aganist dicotyledon weeds, such as Abutilon theophrasti Medic and Amaranthus spinosus at an active ingredient 75 g/hm2 in post-emergence treatment.

初步生物活性测定结果表明，该类化合物具有一定的除草活性，如9a， 9b， 9c， 9f， 9g和9h在有效成分75 g/hm2剂量下，茎叶处理对苘麻、刺苋等双子叶杂草的抑制率达90%以上。

Since the first identification and cloning of a SUT cDNA from spinach, many SUT cDNAs have been cloned and characterized in 34 different plant species, in both dicots and monocots.

自从菠菜中克隆到第一个SUT基因以来，已先后有多个SUT基因的cDNA得到克隆与功能分析，涉及34种双子叶与单子叶植物。

Further isomerization and substitution of this central intermediate leads to the synthesis of other flavonoids. CHSs has been isolated from different plant species, including both monocots and dicots, some of their genomic DNAs and/or cDNAs have also been isolated.

目前，包括单子叶和双子叶植物的很多物种中，有的物种查尔酮合成酶已经得到纯化且基因组、cDNA克隆得到分离，有的或者得到了纯化酶，或者分离得到了基因组、cDNA克隆。

The last three chapters is partⅡ:Our main goal is to study dipolarizations and〓 manifolds.Let M be a symplectic manifold,if M admits two smoothtransversal Lagrangian foliations,then M is called a〓manifold.

后三章为第二部分，主要讨论双极化与仿凯勒流形，设M是一个辛流形，如果在M上存在两个横截的拉格朗日叶状结构，则称M为一个仿凯勒流形。

ROTOR SYSTEM: Two-bladed main rotor with small two-blade servo-rotor above main rotor and two-blade tail rotor.

转子系统：双主旋翼叶片小二叶伺服转子和两个以上的主旋翼，尾旋翼叶片。

It was found that at design condition, the double-channel impeller had better flow pattern, smaller separation and vortex area than that of the two-blade impeller. It was also proved that the measured results showed great agreement with the calculated ones.

结果表明：与双叶片叶轮相比，双流道叶轮流道内脱流-旋涡区的范围较小，流态更好；PIV测试结果与自编程序和FLUENT软件数值模拟结果基本一致。

Taking advantage of grid generation method, three -dimension grid of double circle blade channel and nozzle is generated.

运用网格生成技术的代数方法生成三维双圆弧叶栅通道和三维喷管物理网格。

Observables, a general class of distributions, are to be predicted using the Bayesian approach.

在type Ⅱ双删失数据场合下，利用贝叶斯方法对一类分布的未来观测值作出预测。

A patient with bilateral occipital-lobe lesions L.H.

一个双侧枕叶病变的病人L.H。

And a patient with bilateral medial-temporal lobe lesions H.M.

和一个双侧中颞叶病变的病人H.M。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。