boron

Paradoxically, wurtzite boron nitride 's hardness appears to come from the flexibility of the bonds between the atoms that make it up.

令人意想不到的是，纤锌矿型氮化硼的惊人硬度居然源自原子间富于弹性的键。

ALUMINIUM OXIDE PRIMARILY USED FOR THE PRODUCTION OF ALUMINIUM. DETERMINATION OF BORON. CIRCUMIN SPECTROPHOTOMETRIC METHOD.

主要用于铝生产的氧化铝.硼的测定.姜黄分光光度法

The invention discloses a boron-containing and nitrogen-containing compound for a lubricant additive and a preparation method thereof.

本发明公开了一种用于润滑油添加剂的含硼氮化合物及其制备方法。

As a result of repairing boron Lek spotted Whose trees, do not comment directly felling, tree pull knob counter-thought-wing.

如因修船硼沥看上了谁家的树木，不必征求意见可直接砍伐，树扳钮反以为荣。

The main means to resolve boron deficiency is to increase the rate of boron fertilizer, whereas boron is a non-renewable mineral resource.

农业生产上主要依赖增施硼肥解决耕地缺硼问题，然而硼是不可再生的矿质资源。

In view of the ultrafine nature of powdered boron, the method combined the gravimetric method and volumetric method together.

鉴于硼粉颗粒的超细性，该分析方法以重量法、容量法相结合。

The coulometric method can only be used if the phosphorus or boron contents of these coatings are within certain limits.

如果这些镀层中的磷或硼在限值内，才可能使用库仑法。

The invention relates to a neodymium iron boron permanent magnetic material and a preparation method thereof.

本发明是关于一种钕铁硼永磁材料及其制备方法。

The main methods for manufacturing boron carbide coating were given, and the advantages and disadvantages of these methods were pointed out.

讨论了制备碳化硼涂层的主要方法，指出了各种制备方法的优缺点。

Previously, researchers developed tobacco plants able to tolerate low boron levels but this affected the plant's ability to process sugars.

此前，科学家已经培育出了可以耐受低硼浓度的烟草，但是这会影响烟草处理糖的能力。

9 sec The control rods , made of boron and silver, are lowered, which slows down the nuclear chain reaction within the core.

9秒由硼和银制成的控制棒被降下，减慢反应堆堆芯内的核链式反应。

chemical analytical reagent in electrochemistry; used to melt with silver, gold, stainless steel; as material to produce boron alloys.

用于电化学合成的化学分析试剂，用于熔接和熔合银、金、不锈钢等金属，可做铝镁浇铸生产含硼合金的原料。

Some of Boron Carbide's unique properties include: high hardness, chemical inertness, and a high neutron absorbing , cross section.

碳化硼的独特性能包括：高硬度，化学惰性和高吸收中子，横截面。

The results showed that the surface of boron particles after coating with HTPB became orderly.

经透射电镜观察，包覆的硼粒子表面变得规整。

The aluminum may be replaced at least in part with finely particled zinc, zirconium, boron, or magnesium.

铝粉至少可以部分地用细粒度的锌、锆、硼或镁所代替。

Design of a certain companys production factory of sintered permanent neodymium ferro boron magnet are briefly introduced.

简介了某公司烧结钕铁硼永磁体生产厂的设计；

So, boron doped diamond is better than normal diamond in some aspect. It has shown a wide applied prospect in different domain.

由此，可以看出掺硼金刚石在某些性质上已经优于了普通的金刚石，在不同的领域中已经显示出其广阔的应用前景。

Once upon a time the people thought that the rocks were magma rock and it was impossible to exist boron mine bed underneath of the rocks.

从前人们认为该岩石为岩浆岩，其下不可能存在硼矿床。

A trademark used for an abrasive of boron nitride granules.

氮化硼用于一种由氮化硼微粒组成的磨料的商标

The scientists started with plain, white T-shirts that were cut into thin strips and dipped into a boron solution.

科学家先把普通的白T恤衫剪成细条浸泡在硼溶液里，然后将其取出放入烤箱内加热。