查询词典 y-coordinate

A simple and highly sensitive new kinetic catalytic fluorimetric method was proposed for the determination of trace chromium,based on the catalytic effect of trace amounts of chromium on the oxidation of Pyronine Y by hydrogen peroxide in acetic acid-sodium acetate buffer medium leading to a decrease in the fluorescence intensity.

在HAc-NaAc缓冲体系中，痕量铬对过氧化氢氧化吡咯红 Y的氧化还原反应有催化作用，使吡咯红 Y荧光减弱，据此建立了催化荧光法测定痕量铬的新方法，同时考察了该催化反应的最优条件及动力学性质。

Dr. Page's new finding is surprising because it shows that the Y chromosome has achieved an unexpected salvation. The hallmark of the Y chromosome now turns out to be renewal and reinvigoration, once the unnecessary burden of X-related genes has been shed.

佩奇博士的新发现让人吃惊不已，这表明Y染色体出人意料的被重新救活，贴在它身上的旧标签要被重写，以前笼罩在它身上的X染色体关联基因的阴霾也一扫而空。

The reason that zero can not be divisor, is right?Feng XinkongIn the eighth book of six-year primary school's teaching in nine-year compulsory educationmaterials, it states that "zero can not be divisor". But we can find that the formula, a=cq, checking the dividing exactly , is same as the form of direction proportion function, y=kx; the formula of checking the dividing not exactly, a=cq+r, is same as the form of simple function.

在九年义务教育六年制小学教科书《数学》第八册中规定"零不能作除数"，但是当我们学习了正比例函数和一次函数之后就会发现，验算能整除的除法的关系式a=cq和正比例函数y=kx的表示形式相同；验算有余数除法的关系式a=cq+r与一次函数的关系式y=kx+b的表示形式相同。

To meet therequirements of large-scale of oil refining equipments, rigorousness oftechnical conditions and complexity of structures, special pipe fittings suchas Pants tees and Y-tees are used for the purpose of reducing fall ofpressure and temperature. However high stress concentration is alwaysfound there, cause underlying safety problems.

随着炼油装置的大型化和工艺条件要求的提高以及结构的复杂化，为了减小压降和温度降，采用裤型三通、Y 型三通一些特殊的管件形式，在 Y 型三通、裤型三通的局部往往会有应力高度集中，给设备安全造成隐患。

The slope estimate is the sample covariance between x and y divided by the sample variance of x.

斜率估计量等于样本中x和 y 的协方差除以x的方差。若x和 y 正相关则斜率为正，反之为负。

Methods At first, the relationship of linear or non-linear between dependent X and independent Y in original data can be distinguished by scatter diagram which can be made through Excel software.

方法通过利用Excel可绘制散点图的功能，了解原始数据自变量X和因变量Y间的线性与非线性关系，并由自变量X和因变量Y的自然对数转换后的散点图的情况，决定采用何种曲线拟合。

L The tangent problem. Given a function y = f and a point P on the graph of f , this problem asks for the equation of the line that locally shares with the graph just the point P .

切线问题：给定一个函数f和函数图形y=f上的一点P，这个问题是要求一条和y=f"局部分享恰于点P"的直线的方程式。

Based on the molecular topological theory,we introduce a new topological index Y and use it to study for salt effect constant k s of aliphatic acids in the salt solution.

以分子拓扑理论为基础，提出了新的拓扑指数Y ，并用Y研究了 4种脂肪酸在盐水溶液中的盐效应常数ks。

Compared with the "three antibodies method", the sensitivity for detection of the signal of Y chromosome fluorescence in situ hybridization in brain tissue sections of mice was enhanced significantly by the direct tyramine signal amplification method.

结果 "三步抗体法"在脑切片检测Y染色体阳性信号的灵敏度和特异度分别为85.67％和100％；直接TSA法在脑切片检测Y染色体阳性信号的灵敏度和特异度分别为92.82％和100％。

While a male cell has an X chromosome from the mother and Y chromosome from the father.

而男子的细胞有一个X染色体来自母亲，一个Y染色体来自父亲，而Y染色体仅决定性别。

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