查询词典 speculum iron

The compoud 1 can be converted to intramolecular coupled cyclic olefine (2) as a main product in the presence of iron catalyst.

控制反应条件，在铁催化下可以生成偶联烯烃化的环烯产物(2 )为主要产物；不加催化剂，加热回流反应得到分子内亲核取代反应产物环丙烷化合物 3

Using silicon and metallic iron,α-Si_3N_4 olivary microparticles with a diameter of about 300～500 nm have been obtained at 650℃.When silicon and metallic aluminium were used to react with ammonium chloride,α-Si_3N_4 nanowire bundles with diameter of about 8 nm can be also obtained at 600℃.Since all of the starting materials used are relatively cheap,the methods will have potential prospect in industrial application.3.Graphite-like carbon nitride nanowire bundles with diameters of 200-500 nm were synthesized from the solid state thermolysis of melamine at relatively low temperature(400℃).

相关研究工作的成果发表在International journal of applied ceramicstechnology.2、以廉价的硅铁合金和氯化铵为原料，在600℃合成了α相的氮化硅纳米线束，单根纳米线直径8 nm，长达800 nm，考察了反应温度和反应时间对产物纯度和形貌的影响；以硅粉和铁粉为原料合成了纯度良好，直径为150～500 nm的α-Si_3N_4亚微粒子；以硅粉和铝粉为原料在400-600℃合成了直径为10 nm左右的α相氮化硅纳米线束。

It is held that the oolitic iron was formed in a semi-closed or closed barrier lagoon environment.

通过对鲕状赤铁矿的成分、结构及其他相关特征分析，推测其形成于后砂坝环境。

The iron and aluminum weathering crust formed in late Yanguan stage provided the material foundation for the generation of oolitic hematite.

汤靶沟阶晚期存在一次规模较大的古暴露及古岩溶事件，其间风化剥蚀形成的铁铝质风化壳为鲕状赤铁矿提供了物质基础。

Iron humus ortstein ?

铁质砖红壤土

My gold 戈 iron MA CAI step your oasis, highlighting conqueror without restraint of overbearingly rude.

我的金戈铁马踩踏着你们的绿洲，肆意凸显着征服者的骄横。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

It save the power and water, the iron content does not overproof after the syrup been milled, on the other hand, this milling procedure can has the refine purpose, thus the milled syrup has very good taste.

该机具有节电、节水功能，精磨出来的巧克力，含铁量不超标，另外还可起到精炼的效果，同样精磨出来的巧克力口感完全不一样。

The phenomena of overproof of iron and manganese content in the reservoir water after heavy rainstorm in south areas is analyze d by taking one reservoir as a case based on studying the external pollution sources,groundwater,soil and sludge.

以福建省某水库为例，对南方地区暴雨后水库中铁锰超标现象从外污染源、地下水、土壤、底质多方面进行了分析，找出了该类型水库中铁、锰超标的原因，并提出建议。

Nothing was heard but the low, steady overruling hum of the iron animals.

什么声音也听不到，只除了那只铁兽的不快不慢的，低沉的，笼罩一切的嗡嗡声。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。