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- trace amount of zinc 痕量锌
- Volatile compound Generation-Atomic Fluorescence Spectrometric Determination of Trace Amounts of Zinc in Environmental Water Samples 挥发化合物发生-原子荧光法测定水中痕量锌
- Simultaneous Determination of Trace Amounts of Zinc, Copper, Lead and Cadmium in Beverages by Differential Potentiometric Stripping Analysis 微分电位溶出法连续测定饮料中的铜铅镉锌
- Trace Amounts of Lead in Gasoline, Method of Test for (05. 汽油中铅含量的痕量的试验方法(05。
- Copper atoms are replaced by zinc atoms as the amount of zinc is increased. 随着锌量的增加,铜原子逐步为锌原子所替代。
- The immunological examination technique is fast, easy and accurate even in trace amount of phycotoxin and shellfish toxin. 藻类毒素和贝毒的检测方法要求快速、方便、准确,并且在其含量极微时即可检出以起到预警作用。
- Minerals in the residues including mullite, corundum, quartz, and a trace amount of calcite and K-feldspar. 燃煤产物中的矿物有莫来石、刚玉、石英,以及少量方解石和钾长石。
- A pink, odorless, tasteless powder of zinc oxide with a small amount of ferric oxide, dissolved in mineral oils and used in skin lotions. 菱锌矿粉一种粉红的、无气味且无味道的氧化锌粉末,含有少量三氧化二铁,可溶解在矿物油中,并可用于皮肤防护
- It was indincated that the best content of cumyl hydroperoxide, tetra-ethylene lauryl ethet and a trace amount of fe... 其硫化胶膜拉伸强度、撕裂强度、耐热老化性等物理性能均获得提高。
- Trace amount of chromium and nickel was determined using a flow injection on-line extraction FAAS system. 本文用流动注射-在线萃取火焰原子吸收法测定了人发中微量的铬和镍。
- A pink,odorless,tasteless powder of zinc oxide with a small amount of ferric oxide,dissolved in mineral oils and used in skin lotions. 菱锌矿粉一种粉红的、无气味且无味道的氧化锌粉末,含有少量三氧化二铁,可溶解在矿物油中,并可用于皮肤防护
- The trace amount of gold, platinum, palladiumm and thallium in hydrochloric acid solution can be concentrated by sulfhydryl group carbon powder. 研究了巯基活性炭在盐酸介质中对金、铂、钯和铊的吸附能力。
- "It is amazing that more than a trace amount of comets comes from the inner, hotter regions of the solar nebula where Earth formed," says Brownlee. “这挺让人吃惊,不止一小点彗星物质来自于太阳系星云的内层炽热区域,而地球就是在那儿形成的。”布朗里说。
- In the study of the catalyst impregnation using the Yangyuan active carbon, the factors affecting the supporting amount of zinc acetate on the active carbon have been correlated. 在国产阳原活性炭上浸渍乙酸锌溶液,以制备新的用于乙炔法生产乙酸乙烯的催化剂,得到了一个包含浸渍时间、浸渍比、浸渍温度、浸渍初始浓度的经验公式。
- The amount of oxygen (5 mg/L) is beneficial for human body, and the ions and trace amount of elements can be easily absorbed. 含有适量的氧(5毫克/升);含有适量的有益于人体健康、并呈离子状态物质及微量元素,适宜人体吸收。
- You should first put a small piece of zinc plate into the cup. 首先,要向杯子里放一小片锌板。
- Test results showed that a trace amount of naphthetic acid or nitride could significantly improve the lubricity of diesel fuel. 结果表明,微量的环烷酸和含氮化合物能有效地改善柴油润滑性,而单环、双环芳烃和硫化物对柴油润滑性的改善效果不明显;
- A variety of aldehydes were converted into acylals in good yields with anhydride in the presence of a catalytic amount of zinc bromide under solvent-free conditions. 以醛和酸酐为原料,溴化锌为催化剂,无溶剂条件下高产率地合成了偕二酸酯(其中醛与苯甲酸酐的反应是首次报道)。
- He has a large amount of mail to answer every day. 他每天有大量的信件要回复。
- The analyses show that the major compositi ons of ceramic glazes are Al 2O 3, SiO 2; a small quantity of K 2O, Na 2O, CaO, MgO; and a trace amount of TiO 2, Fe 2O 3, S etc. 实验表明 :陶瓷釉的主要化学成分为Al2 O3、SiO2 ,少量为K2 O、Na2 O、MgO、CaO和微量的TiO2 、Fe2 O3、S等 ;