金属的

"Bell:a hollow metal instrument, usually cup-shaped with a flared opening, that emits a metallic tone when struck."

钟：一种中空的金属乐器，通常呈杯状带喇叭式外张口，敲击时可发出金属的音质。

Furthermore, the polymerization of benzonitrile catalyzed bydifferent Lewis acid and zinc was also investigated.

测定了以Lewis酸和几种金属催化苯甲腈聚合的反应速度，结果表明金属的活性次序为：镁＞锌＞钠＞钙。

Chinese Central Army Battle Of Shanghai 1937 full Gear and Uniform set. Comes with Metal Sabre with Leather Sheath, Metal Helmet with Leather Lining, Service Cap With Sun Insignia and Buttons, Mauser Pistol with 8 working parts, Wooden Handle Grenade With Metal Screw Cap And Fuze, Wooden Stock With Pistol, Metal Canteen with Cork Cap and Cotton Strap, Hand made convas shoes.

1937年上海会战时的中央军，此款包含有全部的装备和制服：金属的马刀和皮革的刀鞘、金属的头盔带皮革衬里、军帽上有青天白日徽章、毛瑟枪可分解成8个部件、手榴弹手柄是木质的并配有金属的保险帽以及引信、手枪的手柄是木质的、军用水壶配有软木塞和棉织的背带、手工缝制的布鞋。

The surface of uranium metal is made of oxide and the distribution of surface layer is: metal/non-stoichiometry oxide/oxide.

铀金属的表面主要为氧化物，其表面组成为：金属-亚化学计量氧化物区-高价稳定氧化物。

PCBs is composed by several metals and nonmetals including resin and Fiberglas etc, and metals and nonmetals are combined tightly, so it's difficult to be liberated and to be separated.

电路板是玻璃纤维强化树脂等非金属材料和多种金属的混合物，其中金属和非金属紧密结合，分选难，在电子废弃物中最复杂、最难处理，处理时要求技术含量高。

This approach is based on the ability of plants to absorb contaminants from the soil and translocate them to their shoots.

该技术成功与否取决於植物从土壤中吸取金属以及向地上部运输金属的能力。

"The acid reacts with most metals, to produce hydrogen and the metal's chloride, and with oxides, hydroxides , and many salts."

盐酸与大多数金属反应产生氢和金属的氯化物，还能与氧化物、氢氧化物及许多盐起反应。

There is no essential difference between the two, as the pool of metal around the hole surrounded by molten metal gravity and surface tension have to make holes to bridge the trend, while the metal vapor is generated by a continuous attempt to maintain the existence of holes.

从机理上看，这两种焊接方法的前提都是焊接时存在小孔，两者没有本质的区别，小孔周围为熔池金属所包围，熔化金属的重力及表面张力有使小孔弥合的趋势，而连续产生的金属蒸气则力图维持小孔的存在。

The study status of treating wastewater containing metal ions and recovery of rare-earth metal by using emulsion liquid membrane technique were especially expounded.

介绍了液膜分离原理及其工艺流程，重点阐述液膜分离技术在处理含金属离子废水和提取稀土金属的研究现状和进展。

Its preparing process includes dissolving the salts containing metal in group VIB or VII or their mixture in ammonia water until full dissolving, and adding citric acid to stabilize the solution.

其制备方法为：先用氨水溶解含ⅥB族金属或Ⅷ族金属的盐，或二者混合物，使之完全溶解后，加入柠檬酸以使溶液稳定。该溶液稳定性好，制备过程快速、简便、节能。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。