Its composition containing: organic humus and nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and iron, copper, zinc, boron, molybdenum and other trace elements.

它的成份含﹕有机腐殖质和氮、磷、钾、钙、镁、硫及铁、铜、锌、硼、钼等多种微量元素。

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Micronutrients. The micronutrients essential to plants include molybdenum, boron, zinc, manganese, iron, copper, and chlorine.

微量营养元素植物所必需的微量元素包括钼、硼、锌、锰、铁，铜和氯。

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This paper mainly studies the influence of the boron gray cast iron with its microstructure, mechanical properties and metallurgical quality index in different inoculating conditions.

同时研究了不同孕育条件对硼灰铸铁的力学性能及冶金质量指标的影响。

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Dr Post's system uses magnets made of an alloy of neodymium (a rarish metal), iron and boron.

ECONOMIST: Maglev trains

Of course, they didn't just use any old off the shelf magnet, instead designing custom neodymium iron-boron models that produce just the right magnetic field necessary to make that hard drive completely useless.

ENGADGET: Military-grade "Guard Dog" hard drive degausser

Because some users turn the crank-handle faster and harder than others, a nifty three-stage gearbox and a dynamo based on powerful neodymium-iron-boron magnets is used to ensure that efficiency is largely independent of the torque applied.

ECONOMIST: MONITOR