多叶

The Bayesian analysis of the multiple equation linear system is an important part of Bayesian inference theory about linear model.

多方程线性模型系统的贝叶斯预报分析是贝叶斯线性模型理论的重要组成部分。

P×P and P were two major non-Bayesian algorithms. 6 Less than 25% of the participants used frequency. In those who got other results except P , much more people used probability. Experiment 2 had a randomized multigroup posttest design. There was only one factor named implied condition which had five levels: not imply, imply P, imply addition, imply division and imply all. The results showed that: 1 All the implied conditions significantly improved the participants' performance. When under the condition of implying division, the participants derived the best results. 2 31.9% of the participants got correct answer, 73% of who used frequency to rewrite the information. 3 78% of the participants could apply one or several of the four concepts: probability of "not the event", multiplication rule, addition rule and condition probability.

结果表明：1 被试的估计受问题内容的影响，权威型问题情境容易使被试高估，非权威型问题情境使被试的高估现象大大减少；数据结构和提问形式对被试估计不产生影响。2 有近5%的被试能正确估计P，其中 73%使用频数对信息进行再表征。3 贝叶斯推理中各分步骤的困难程度由低到高分别是：乘法、P、加法、除法。4 有50%的被试能运用对立事件概率、概率乘法、概率加法、条件概率这四个概念中的一种或者几种。5 使用最多的两种非贝叶斯算法是P×P和P。6 不到25%的被试使用频数；求得除P以外各类结果的被试中，使用概率的人数远多于使用频数的。

Basal leaves 1 or more; cauline leaf 1 or absent; leaf sheath and petiole long.

根状茎匍匐基生叶1或更多；茎生叶1或无；叶鞘和叶柄长。

A plant of the genus Tephrosia having pinnate leaves and white or purplish flowers and flat hairy pods.

灰叶属的一种植物，有羽状叶、白色或淡紫色花和多毛的扁荚果。

Results showed: in Podocarpus leaves, there is only one midrib, the xylem tracheid of midrib vascular bundle is multi-form, transfusion tissue belongs to Cycas-type and transfusion tracheids are isodiametric, the accessory transfusion tracheids between palisade tissue and sponge tissue are developed; in Nageia leaves, there are plenty of parallel leaves, the xylem tracheids of each vein are relatively simple, transfusion tissue belongs to Taxus-type and transfusion tracheids are longer in longitudinal section than that in transverse section, the accessory transfusion tissue between palisade tissue and sponge tissue is absent.

结果表明：罗汉松属叶1条主脉，主脉维管束木质部管胞发达，转输组织为苏铁型，转输组织管胞等径，栅栏组织和海绵组织之间的副转输组织管胞发达；竹柏属叶多条平行叶脉，维管束木质部管胞相对不发达，转输组织为红豆杉型，转输组织管胞纵向伸长，栅栏组织和海绵组织之间不存在副转输组织。

The Carmine spider mite (Tetranychus cinnabarinus Boisduval) which is allied to Tetranychus urticae Koch, is one of the serious pests with polyphagy in agriculture, found to infest the mulberry and more than 100 other host plants.

朱砂叶螨(Tetranychus cinnabarinus Boisduval)是多食性主要农业害螨之一，与二斑叶螨是近似种，寄主包括桑树在内的100多种植物。

From the twenty century, the computer technology has great development, which made the computation of the posterior distribution based on the multidimensional integral possible.

二十世纪以来，计算机技术得到了空前的发展，这使得以多维积分为基础的贝叶斯后验概率的计算成为可能，这也推动了贝叶斯计量经济学的发展。

Wheat varieties and leaf rust samples of Hebei province were collected in 1982 and study of interaction between host and pathogen was made in 1983. The results expressed by virulence frequency showed that this method of investigation provided directly the information of the interrelationship between the wheat varieties and the rust fungus .

我科研组采取毒力频率来研究河北省小麦品种和河北省叶锈菌的相互作用，我们认为：这种研究方法能直接反应品种与菌株之间相互作用的情况，对生产者和抗病育种工作者提供的信息，要比小麦叶锈菌小种鉴定提供的以编号对小种命名的小种名单要有用得多。

Influence factor of shade-grown leaves in photosynthesis in many experiment days.

的主要因子，而叶温多为荫叶光合作用的主要影响因子。

The results showed that pathogen conidia germination germ tube after the invasion from pore to complete the required invasive 12h ~ 48h, the 10d show symptoms around, 16d browser ripe conidia; host bacteria cause symptoms of infection, the mycelium from the Under surface of leaf across the mesophyll cells, in thin-walled small positive inter-leaf assembly, and finally the formation of conidia, and conidia generated subepidermal parenchyma cells in between, a certain randomness.

结果表明：病菌分生孢子萌发后产生芽管从气孔侵入，完成侵入需要12h～48h，大约到10d显示症状，16d分生孢子器成熟；病菌侵染寄主引起症状后，菌丝多从叶背面跨过叶肉细胞，在叶正面薄壁细间集结，最后形成分生孢子器，分生孢子器产生于表皮下薄壁细胞之间，具有一定随机性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐