查询词典 derived

And then, adopting the same model, cyclic moment estimation statistic of different orders are constructed respectively, large sample variance expressions of the estimator through theoretic analysis are derived, as well as the constraint relation of estimator performance and noise statistical characteristic. The curve of estimation performance is obtained through Monte Carlo simulation test, which proves the related conclusion derived.

然后，论文同样以加性和乘性噪声联合干扰下的复谐波信号和复线性调频信号为观测模型，分别构造了基于不同阶次的循环矩估计量，从理论上推导出了估计量的大样本方差表达式，分析了估计量性能与噪声统计特性的约束关系，通过Monte-Carlo仿真试验得到了估计性能的曲线，验证了推导的有关结论。

Additional income in T4 derived from banana hedgerows.** Additional income in T4 derived from sapodilla hedgerows.

注释：*：T4的额外收入来源于香蕉隔离带，**：T4的额外收入来源于人心果隔离带。

Heterosmilax is considered to be derived from ancestral Smilax and occurs as the most derived clade of the Smilacaceae,and thus it is reasonable to retain it as a section in Smilax s.1. Within Smilax most currently recognized sections are polyphyletic, but some major lineages are distinct.

Coilanthus的部分种组成一个具较高支持率(88％)的单系分支，分析表明肖菝葜属并非是一个好属，应归入菝葜属；(3)菝葜属6个组的划分大都没有得到支持，只有东亚北美间断分布的草本菝葜组sect。

A general formula for three dimensional refraction of progressive gravity water waves has been derived using the conservation of waves, which has a form the same as that derived using Fermat's principle in optics. For the case of gentle sloping plane beach the formula can be degenerated into the famous Snell's law.

三度空间中前进波浪的折射现象，已依波浪守衡性的本质简明地导述出其主控的通式，且与由较繁冗的光学之Fermat原则所得者完全一致；而最简单的均匀缓坡度底床的特例情况则退化成Snell定律者。

The catalytic performance of MDA on a Mo/HZSM-5 catalyst derived from the HZSM-5 zeolite prepared from soluble glass is better than that derived from the HZSM-5 zeolite prepared from silicon gel.

由水玻璃合成的HZSM-5分子筛制得的Mo基催化剂，其甲烷无氧芳构化性能优于由硅溶胶合成的HZSM-5分子筛制得的Mo基催化剂。

Using these vectors, clusters of vectors are derived using a derived spectral distance measure.

使用这些矢量，用一个导出的频谱距离可推导出矢量簇。

Thesynthesized chemical messengers include phospholipid-derived leukotriene B 〓, sphingolipid-derived sphingosine, ceramide, phytosphingosine, and new sphingosine derivativetetrahydroxyl long chain bases.

在核酸和蛋白质继续占据着生命科学中心的同时，脂质及其代谢物、糖及糖缀合物在生命过程中的作用，特别是它们的化学信息物质作用，正被不断揭示，引起了广泛重视。

Treating a derived object as if it were a base is safe, because every derived object has a base subobject.

将派生类对象当作基类对象是安全的，因为每个派生类对象都拥有基类子对象。

Changqingwang No.5 is a new early maturing, high yield and disease resistant summer squash F1 hybrid bred by crossing a dark green inbred line A-101, derived from hybrid of France Cuilv and Korea Hanchengzaoshu, as female parent, and white inbred line 03-1, derived from foreign hybrid, as male parent. The plant is strong at late development stage.

以法国翠绿和韩国汉城早熟杂交，经多代自交纯合选育的深绿皮自交系（代号A-101）为母本，国外杂交种多代自交分离选出的稳定白皮自交系（代号03-1）为父本，育成了早熟丰产抗病的西葫芦杂交种长青王5号。

It is possible for the unicarpellate condition to have been directly derived by reduction from syncarpy, and it could also be that the unicarpellate state has been derived from apocarpy by reduction in carpel number. The present results indicate that a progression has occurred in the evolution of carpels in Alismatidae from basally connate carpels through syncarpy or apocarpy to a single carpel.

本研究揭示了泽泻亚纲中不同心皮之间可能的演化过程，即从基部合生心皮向合生心皮或离生心皮方向演化，而单心皮，则很有可能是通过具多数、合生的心皮直接简化而来；同时它也有可能从具多数、离生的心皮简化而来。

I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像，后来回台湾，甚至去年在北京，居然也四处看见她的海报，才惊讶她的魅力之大。