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- With certain exceptions, it now prohibits the sale of a packaging with a total concentration of lead, cadmium, mercury plus hexavalent chromium that exceeds 100 ppm. 某些例外;禁止出售一种包装;以总浓度铅、镉、汞六价铬超过100分之多.
- A ball of lead will weigh down an equal bulk of feathers. 一个铅球要比同样大小的羽毛团重。
- There is a concentration of people in big cities. 大城市人口集中。
- A border or rim of lead, as around a windowpane. 铅框一铅制边界或框，如围在窗玻璃格四周的
- An alloy composed of lead, tin, and zinc. 铅锡锌化合物由铅、锡和锌组成的一种合金
- We to ed the leak i the ga ipe y mea of lead. 我们用铅堵塞了煤气管上的漏洞。
- What is the concentration of salt in sea water? 海水中盐的含量是多少?
- Strips of lead used to hold the panes of a window. 铅框用于支撑窗玻璃格的铅条
- S is the concentration of unpaired nucleotides. S是不配对的核苷酸的浓度。
- Oh,my God! You're casting nickels out of lead. 噢，天啊，你们在用铅造硬币。
- The concentration of ethylene is on the high side. 乙烯浓度偏高。
- One of leading families has show a rivalrous attitudes the others. 主要家族中的一家曾封其他家族显示敌对的态度。
- L-1 was the optimal spraying concentration of. L-1为最佳喷施浓度。
- A border or rim of lead,as around a windowpane. 铅框一铅制边界或框，如围在窗玻璃格四周的
- Q: Does the testing need concentration of the mind? 问:测试时需要集中精神吗?
- APPOINTMENT OF LEAD INDEPENDENT DIRECTOR. 庆源宣布委任新独立董事。
- They strongly recommended concentration of offer. 他们极力建议集中报盘。
- Flexible direction of lead wire, nice shape. 引出线方向灵活,造型美观。
- The exercises demand great concentration of mind. 这种练习要求全神贯注。
- We stopped the leak in the gas pipe by means of lead. 我们用铅堵塞了煤气管上的漏洞。
