铁

Second, men can donate blood regularly Cancer Prevention British scientists study found that men can donate blood cancer, it is because contains a lot of iron in the blood, and the body of continuing high level of iron content will be promoting cancer, regular blood donors to be effective in lowering blood-content hemosiderosis, health men can donate blood regularly received from the cancer effects.

二、男子定期献血可防癌英国科学家研究发现男子献血可以防癌，这是因为血液中含有大量铁元素，而人体内铁元素含量水平持续过高会促会癌症，定期献血可有效地降低血液中铁血素的含量，因此健康男子定期献血可收到离癌的效果。

It was found that the main active center is the iron ions which are in the exchange sites in addition to heteroatom FeZSM-5 itself.

进一步研究发现杂原子FeZSM-5分子筛催化剂上主要活性中心是处在阳离子交换位上的铁离子，同时，由于铁原子进入分子筛骨架，使杂原子FeZSM-5本身也具有一定的反应活性。

We propose that ORFL3 gene product may have roles in iron transport. Under BG11〓 culture conditions, ML3 also can induce heterocysts, But heterocyst development was a little different, there were many heterocysts at two ends of filaments.

但在铁缺失条件下ML3生长缓慢，光合色素含量低，蛋白质合成慢，表明ORFL3基因产物对在缺铁条件下的生长是必要的。

The synthesis methods of nipagin esters catalyzed by sulfuric acid , p- toluene sulfonic acid , ferric sul-fate hydrate, ferric chloride hexahydrate, aluminium chloride hexahydrate, rare earth compound, solid super acid and heteropoly acid were reviewed.

评述了采用硫酸、甲苯磺酸、合硫酸铁、水合三氯化铁、水合三氯化铝、土化合物、体超强酸和杂多酸等催化剂催化合成对羟基苯甲酸酯的方法。

The synthesis methods of dibutyl succinate catalyzed by p-toluene sulfonic acid, amino sulfonic acid,strongly acidic cationic exchange resin, ferric chloride hexahydrate, stannic chloride pentahydrate, copper sulfate , ammonium ferric sulfate dodecahydrate, titanium sulfate, sodium bisulfate monohydrate,and solid super acid et al were reviewed.

本文评述了对甲苯磺酸、氨基磺酸、强酸性阳离子交换树脂、六水三氯化铁、五水四氯化锡、十二水合硫酸铁铵、硫酸钛、一水硫酸氢钠和固体超强酸等催化剂催化合成丁二酸二丁酯的方法。

Now, it is true that a high quality iron can be better than a cheap one.

现在，高质量的铁确实比便宜的铁要好。

Therefore iron in the diet should be low (red meat is especially high in iron).

因此，铁的饮食，应低（红色肉类，尤其是在高铁）。

Animal food and soybeans not only a high iron content and iron absorption rate is also high.

动物性食物和大豆不仅含铁量高，而且铁的吸收率也很高。

It results from the consumption of large volumes of traditional beer that is home-brewed in iron pots or drums and consequently has a high iron content.

这是由于当地人平时饮用大量传统啤酒的结果，传统啤酒是居民在家中用铁的盆或桶酿制，因此具有较高的铁含量。

Any of numerous trees, such as the hornbeam and the hop hornbeam, that have very hard wood.

铁木鹅耳枥和铁木等许多树的任一种，木质坚硬注意，注意力集中

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。