恒星的金属度用于表征它含有的“金属”的量——其实是所有比氦重的元素的量。
The metallicity of a star measures the amount of "metals" it has —that is, any element heavier than helium.
恒星的金属度用于表征它含有的“金属”的量——其实是所有比氦重的元素的量。
The metallicity of a star measures the amount of " metals" it has — that is, any element heavier than helium.
除了这些，旋度还有一个用处，如果你还记得，我们讨论平面的时候,当把线积分转换成二重积分的时候。
But another place where this comes up, if you remember what we did in the plane, curl also came up when we tried to convert line integrals into double integrals.
在知识受流行度和金钱支配的未来，我们无法承受之重。
We cannot afford a future in which knowledge is at the mercy of popularity and money.
（德克萨斯州是美国最大的州，除海外州）客人名单一度曾包括700人，她的7层婚礼蛋糕重300磅。
At one point, the guest list included 700 people and her seven-tiered wedding cake weighed 300 pounds.
如果旋度在原点有定义，你就可以试试了，计算二重积分。
So, if a curl was well defined at the origin, you would try to, then, take the double integral.
金属丰度是对恒星内除氢和氦之外元素的相对丰度的度量(天文学中比氦重的元素都叫金属。——译者注)。
Metallicity is a measure of the relative abundance in a star of elements other than hydrogen and helium.
那就可以使用格林公式了，并且我们知道,它就等于的二重积分，结果为0，因为旋度F等于。
Then, yes, we can apply Green's theorem and it will tell us that it's equal to the double integral in here of curl F dA, 0 which will be zero because this is zero.
有一个和散度定理很像的东西，当然，对于通量和div,f的二重积分，都可以使用类似的理论。
There is a similar thing with the divergence theorem, of course, with flux and double integral of div f, you can apply exactly the same argument.
其中一种说明了，在向量场上，沿逆时针方向，向量做的功等于，平面区域上旋度F的二重积分。
So, one of them says the line integral for the work done by a vector field along a closed curve counterclockwise is equal to the double integral of a curl of a field over the enclosed region.
水星二重成像系统(MDIS)：在近红外波段上拍摄金星的夜面，对接近以及离去半球的彩色及高解析度单色图像拼接。
Mercury Dual Imaging System (MDIS) : Images of the night side of Venus in near-infrared wavelengths; color and high-resolution monochrome mosaics of both the approaching and departing hemispheres.
就片剂而言，最终控制的几个主要参数为：片重、硬度、脆碎度、崩解、溶出等。
As for tablets, the parameters to be controlled finally are: weight, hardness, frangibility, disintegration and stripping.
工程结构的动态特性灵敏度分析对工程结构的动态设计、优化设计、控制理论和动态修改等方面的研究有着十分重要的意义。
The structural dynamic SA in project is of great importance for the study on dynamic design, optimization design, control theory and dynamic modification etc.
一个站点想做大，百度的流量十分重要，这就意味着对自己的站点判了死刑。
A site wants to do big, the discharge of Baidu is very important, this meant the site to oneself to sentence capital punishment.
因此，对煤矿生产、加工过程中产生的有害气体进行高灵敏度检测变得十分重要。
So it is very important to detect more sensitive the harmful gases engendering in the coal mine.
信效度研究表明，该量表的同质信度、重测信度、内容效度、结构效度和效标效度都达到了心理测量学的要求。
Psychometic properteis analysis showed that the scale achieved good to excellent levels of internal consistency, test-retest reliability, and content, construct, and criterion-related validity.
切削力、磨削力和磨削表面粗糙度是表征切削加工和磨削加工的最重要特征量，对它们进行预测分析和过程控制具有十分重要的意义。
Cutting force, grinding force and surface roughness of grinding are the most important parameters to scale machine progress, thus precision methods for them is needed in engineering.
启用第二垂直阵列后，精确度因具备了三重因素而得到提高。
When the second vertical array is activated, it's combined input increases the accuracy by a factor of three.
其REE丰度逐渐增高，轻、重稀土分馏程度表现为愈趋显著的总体演化趋势。
Their REE abundance increases progressively and their light and heavy REE fractionations also have a general evolutionary trend of becoming more and more marked.
结果与结论《国际功能、残疾和健康分类》检查表有较高的重测信度与内容和结构效度，可用于脊髓损伤临床评定。
Results and ConclusionThere were high test-retest reliability and validity in WHO ICF-Checklist for patients with spinal cord injuries.
因此，对珠宝商的信任度以及产品品质保证对于蓝色尼罗河的目标市场而言都是十分重要的。
Therefore, trust in the jeweler as well as product guarantees would seem to be important to Blue Nile's target market.
对于体外预应力混凝土结构，预应力索的防腐十分重要，它关系到结构的安全性和可靠度。
As to concrete structure of external prestressing, for it affects security and trustiness of structure, the antisepsis of external prestressing cable is extremely important.
磨矿工艺的确定是否合理对选别指标的影响是十分重要的。所以对磨矿细度做好充分的研究工作是十分必要的。
It has a great influence on the quality of mine's chosen whether the decision of grinding technology is reasonable, so sufficient study on grinding fineness is necessary.
不同配比的基质分别在5 %和1%水平上不同程度地影响着番茄幼苗的开展度、茎粗、茎干重、根干重和根体积等幼苗生长指标。
The effect of different substrate on diameter of stem, width of seedling, dry weight of stem, dry weight of root and volume of root is significant at 1% and 5% level.
对沥青进行不同温度、不同针重及不同贯入时间下的针入度试验，以此来评价沥青的流变特性及路用性能。
The rheological property and pavement performance of asphalts are studied by carrying out penetration test at different temperature, different weight and different time.
色彩在绘画中是十分重要而富有魅力的艺术语言，借助它可以在一个二度空间创造出丰富而独特的画面效果。
Color is an important and charming artistic language in painting, by which a colorful and unique tableau effect can be created in two dimension.
因此，采取有效措施制备高活性度石灰和强化碳化反应过程具有十分重要的意义。
It's very important to prepare lime with high activity and improve carbonization process by taking effective measures.
麦鼓的颗粒细度适当变小，有利于幼虫的个体发育、平均蛹重的提高。
The fit declining would help the development of the individual larva and improve the weight of average papue.
麦鼓的颗粒细度适当变小，有利于幼虫的个体发育、平均蛹重的提高。
The fit declining would help the development of the individual larva and improve the weight of average papue.
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