Increasing Earth's reflectiveness can cool the planet.

提高地球的反可以给地球降温。

A roof or a wall with higher-than-normal reflectance will absorb less sunlight.

反高于正常值的屋顶或墙壁吸收的阳光较少。

If we put this material onto young, thin ice, we instantly make it more reflective.

如果我们把这种材料放在初形成的薄冰，就能立刻提高它的反。

Its surface is actually pretty dark, with about the same reflectivity as a chalkboard or asphalt.

它的表面其实非常暗淡，只有大约相当于黑板或者沥青的反。

After producing the lava, the researchers calculated its reflectivity in both the molten and solid states.

制造出熔岩之后，研究员计算了熔岩在熔融状态和固态下的反。

Black carbon deposited on the Arctic snow and ice, he says, will have only a minimal effect on its reflectivity.

他说，落到北极冰雪面的黑炭，只会对其反来微小的影响。

You can't do something like paint one side of the asteroid white and cause its reflectivity to change, which nudges the orbit.

你不能像某些理论那样，把小行星的一侧涂成白色，以改变其反，从而微调其轨道。

If we put just a few hairs widths onto young, thin ice, that isn't very reflective, we instantly make it more reflective.

如果我们在反不高的初形成薄冰放几根头发丝宽的玻璃微球，就能立刻提高它的反。

The results showed that the use of primary hyperspectral reflect ance is very feasible for such classification.

研究结果表明，利用原始高光谱反进行此类分类是非常可行的。

By restoring Arctic ice reflectivity, we could gain another 15 years that we sorely need to make the transition to sustainable fuels and energy.

通过恢复北极冰层的反，我们可以再赢得 15 年的时间，而这正是我们向可持续燃料和能源过渡迫切需要的时间。

For the Shatangj u mandarin cultivar, a non-destructive citrus HLB field detection method based on hyperspectral reflectance is proposed in thi s study.

本研究针对砂糖橘品种，提出了一种基于高光谱反的非破坏性柑橘黄龙病田间检测方法。

The galvo mirrors are moving relatively quickly, but they may need to be slowed down a bit, depending on the reflectivity of the material in order to ablate it.

电流镜的移动相对较快，但它们可能需要慢一点，这取决于烧蚀它所需的材料的反。

On top of this the SR71 itself was armed with defensive countermeasures that included jammers, and the low radar-reflectivity only confounded problems for an incoming missile.

最重要的是， SR71 本身配备了包括干扰器在内的防御对策，低雷达反只会混淆来袭导弹的问题。

This means insulating the embankments of roads by increasing their sickness and also increasing the reflectivity of paved surfaces to minimize the amount of solar radiation absorbed.

这意味着通过增加路基的厚度来隔热，并提高铺装表面的反，以减少吸收的太阳辐量。

Heatseeker The JWST's vast primary mirror is seven times the area of Hubble's, and instead of polished glass, the mirror contains 18 hexagonal units made from beryllium for maximum reflection.

热追踪者 詹姆斯·韦伯太空望远镜的主镜面积是哈勃望远镜的七倍，而且不同于抛光玻璃， 该主镜由18个六边形铍制单元构成， 以实现最大反。

Se veral machine learning algorithms (logistic regression, decision tree, support vector machine, k-nearest neighbor, linear discri minant analysis, and ensemble learning) were used to discriminate between disease groups: healthy, symptomatic HLB-infecte d, and asymptomatic HLB-infected, based on leaf reflectance.

采用了多种机器习算法（逻辑回归、决策树、支持向量机、K近邻、线性判别分析及集成习），基于叶片反对疾病群体——健康、症状性黄龙病感染和无症状性黄龙病感染——进行区分。