Only electrons in the outer shell can form chemical bonds, so the elements in each column are chemically similar.
只有外层内的电子才会形成化学键，因此每一列中各元素化学性质均相似。
Shell Research Limited is sponsoring a Chair in Chemical Engineering at Tsinghua University to lead research into finding clean energy solutions for China.
壳牌研究有限公司将资助在清华大学化学工程系设立的一个讲席，领导为中国找寻清洁能源解决方案的研究工作。
Shanghai Jeatan Technology co., Ltd is one of the few companies which is specialised in handling cashew shell liquid, a kind of chemical products.
上海经天新材料科技有限公司是世界上极少数专业经营腰果壳液系列化工产品的公司之一。
It is found that the chemical stability of the drug carrier can also be increased with the existence of SiO2 shell.
实验中发现通过在药物载体外包裹一层二氧化硅外壳，该药物载体的化学稳定性得到了显著的提高。
Particulate of graphite electrode wastes from an electric-carbon materials factory was formed "core-shell" negative materials by chemical deposition coating with medium pitch.
以大功率石墨电极废品破碎后的微粒为“核”，以中温沥青为包覆原料，经化学沉积包覆形成“核-壳”型锂离子蓄电池负极材料。
The nanocomposite with core/shell structures is an ordered assembly system in which one nanomaterial is covered by another nanomaterial via chemical bond or other interactions.
核/壳结构复合纳米材料是具有特殊性能的功能材料，是由一种纳米材料通过化学键或其他相互作用将另一种纳米材料包覆起来形成的纳米尺度的有序组装结构。
The stainless steel cap nuts on shell of the hoist protect the screw from various injuries of exposed outdoor for long time and severe chemical environment.
整机外壳采用不锈钢盖型螺母，更有效保护螺丝长时间户外及化工的恶略环境不受损伤，使拆卸维护更加方便。
This paper introduces a new and high effect Shell-Tube heat exchanger and its an application to chemical fertilizer plants.
本文介绍了一种新型管壳式换热器及其在化肥厂合成氨变换式段作为气一气换热设备的使用情况。
Solvent for paints lacquers shell-lac inks adhesives dyestuff cellulose acetate nitro-cellulose ethyl cellulose etc can also be used in metal cleaning it is also a raw material for chemical synthesis.
用作油漆清漆虫胶油墨胶粘剂染料生物碱醋酸纤维素硝化纤维素乙基纤维素聚乙烯醇缩丁醛等的溶剂金属表面清洗剂制造化工产品的重要原料。
The USES of peanut shell are introduced, such as making fertilizer, feed, adhesive, active carbon, complex material, medical and chemical engineering material.
本文对花生壳的一些重要用途如制取农用肥料、饲料、胶粘剂、复合材料、活性炭以及提取医药和化工原料等作了简要介绍。
On an imported heat exchanger in some chemical plant, an offset caused by fabricating deviation is presented on the joint between shell and straight part of head. By means of finit element method.
某化工厂一台进口换热器，由于制造偏差，在封头直边段与筒体相接处产生错边。
The technologies of heat transfer enhancement for shell-and-tube heat exchanger have been applied in petrol and chemical industries.
强化传热技术已广泛应用于石油、化工领域的管壳式换热器中。
The shell melts when the temperature reaches 150C (302F), releasing the chemical compound.
当温度达到150摄氏度（华氏302度）时外壳就会熔化掉，释放出其中的化合物。
The shell melts when the temperature reaches 150C (302F), releasing the chemical compound.
当温度达到150摄氏度（华氏302度）时外壳就会熔化掉，释放出其中的化合物。
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