The navy's notice suggests, though, that boron is back.

然而，海军的公告表明又回了。

The only way you can get boron down there, is by the foundering of the ocean crust.

钻石的唯一源就是海洋壳的沉没。

So far, the researchers involved have managed to produce one that is 40% boron and yet burns more or less completely.

到目前为止，参与研究的研究人员已经成功制造出了一种含有40%且几乎可完全燃烧的燃料。

Super hardened boron, sharpened with a CO2 laser.

- 超硬，使用 CO2 激光打磨。

Over millions of years, the boron continued to move deep underground.

数百万年，续向下深。

Scientists already knew these diamonds received their blue color from the element boron.

科学家们已经知道这些钻石的蓝色自元素。

Its fuels are boron (five protons and six neutrons) and ordinary hydrogen, both plentiful.

它的燃料是（五个质子和六个中子）和普通的氢，两者都很丰富。

America's air force experimented in the 1950s with stuff nicknamed zip fuel, which was laced with compounds of boron called boranes.

美国空军在20世纪50年代试验了一种叫做拉链燃料(高型能的飞机燃料)的东西，这种燃料含有烷的化合物。

Compounds of boron feature in washing powders and cleaning products (" borax" ), antiseptics and water softeners, and also as additives in fibreglass, but such roles are humdrum.

化合物用在洗衣粉和清洁产品(“砂”)、防腐剂和水软化剂中，也可作为添加剂的玻璃纤维，但这些作用是单调的。

The only way you can get boron down there, is by the foundering of the ocean crust. 24 They literally sink deep into the mantle.

在那里获得的唯一方法是通过沉没的洋壳。 24 它们真的沉入幔深。

The project's objective is to " determine a form of boron or a boron-based chemical pathway that leads to implementation of boron in energetic compounds, especially fuels (solid and liquid)" .

该项目的目标是“确定一种的形式或一种基于的化学途径，使在高能化合物，特别是燃料(固体和液体)中得以实现”。

After that, for days, thousands of tons of clay, sand, boron, and dolomite, were dropped by helicopter into the burning reactor to quell the fire, but also to try and prevent the spread of radiation.

在那之后的几天里，成千上万吨的粘土，沙子，和白云石，被直升机抛进燃烧的反应堆中以扑灭大火，并试图阻止辐射的扩散。