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The Nandan-Hechi metallogenetic belt is the most important tin-polymetallic producing district in China, and is the location of the Dachang super-large tin deposit.
丹池成矿带是我国重要的锡多金属矿业基地和著名的大厂超大型锡矿产出地。
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A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid comprising: a component of anions, each of said anions consisting of at least four fluorine atoms and at least one atom of an element selected from the group consisting of titanium, zirconium, hafnium, silicon, and boron, and, optionally, ionizable hydrogen atoms, and optionally, one or more oxygen atoms; a component of cations of elements selected from the group consisting of cobalt, magnesium, manganese, zinc, nickel, tin, zirconium, iron, and copper; the ratio of the total number of cations of this component to the total number of anions of component being at least 1:5; sufficient free acid to give the composition a pH in the range from 0.5 to 5.0; a component selected from the group consisting of phosphorus-containing inorganic oxyanions and phosphonate anions; and a component selected from the group consisting of water-soluble and water-dispersible organic polymers and polymer-forming resins and, preferably, also including a component selected from the group consisting of tungstate, molybdate, silicotungstate, and silicomolybdate anions.
通过对包含以下成分的含水酸性液体进行干燥，可以在金属上形成无铬的转换涂层，该涂层与普通铬酸盐转换涂层相比，至少在抗腐蚀质量上等效：$_一种阴离子成分，所述各个阴离子包括至少4个氟原子，至少选自钛、锆、铪、硅与硼元素中的1个原子。任选地可离解的氢原子，任选地1个或多个氧原子；$_一种选自钴、镁、锰、锌、镍、锡、锆、铁与铜元素的阳离子成分，上述成分的阳离子总数与成分内的阴离子总数之比至少为1∶5；$_足够的游离酸以使该组合物的pH值在0.5～5.0的范围内；$_一种选自含磷的无机含氧阴离子与膦酸盐阴离子的成分；$一种选自水溶性与水可分散性有机聚合物与聚合物形成的树脂的成分，优选还包括一种选自钨酸盐、钼酸盐、钨硅酸盐与钼硅酸盐阴离子的成分。
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Singapore's Temasek, meanwhile, already has been reorienting its portfolio more toward investments in Asia and Singapore itself.
与此同时，新加坡淡马锡已经在调整投资组合方向，更多地转向投资亚洲和新加坡本国。
- 更多网络解释与锡多地相关的网络解释 [注：此内容来源于网络，仅供参考]
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Zion：锡安公园
我们的国家公园,无论是优山美地公园还是黄石国家公园,无论锡安公园(Zion)抑或谢南多厄公园(Shenandoah),都是基于一个宗旨建成:它们是大家共有的财富. 奥斯卡获奖导演肯.伯恩斯带你探索国家公园不为人知的历史.
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tinnily：音色地
tinnily 锡多地 | tinnily 音色地 | tinnitus 耳鸣
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tinnily：锡多地
tinnily 锡地 | tinnily 锡多地 | tinnily 音色地
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tinnily：锡地/锡多地/音色地
tinner /锡矿工/洋铁匠/罐头商/ | tinnily /锡地/锡多地/音色地/ | tinning /镀锡/