针状晶体

Inorganic nonmetal material ; tetrapod zinc oxide whisker ; crystal growth mechanism ; structure ; crystalline

无机非金属材料；四针状氧化锌晶须；生长机理；结构；晶体

The reactants were managed to be colloidal by reaction control and using appropriate nucleating agents. Acerate HA crystal obtained under different conditions was sintered to obtain the nano-HA granule with a diameter of 1-56 nm.

材料：采用磷酸二氢钙和氢氧化钙中和反应构造体系，通过控制反应条件，适量加入形核剂，使反应物成为胶体状态，在不同反应条件下得到针状羟基磷灰石纳米晶体，再进行烧结除处理，得到羟基磷灰石纳米粒子，直径为1~56 nm。

Hydroxyapatite acerate nanoparticles with mean size ranging form 20~50nm are synthesized by the impinging stream devise using emulsion systems consisting of aqueous phase, cyclohexane as the oil phase and OP-10, n-octanol as the nonionic surfactant in definite pH value.

在一定pH值条件下，采用水溶液/环己烷/OP-10/正辛醇四元反相微乳液体系并结合撞击流技术制备出粒径为20~50nm的针状纳米羟基磷灰石晶体。

It was identified by X-ray powder pattern and by microscopic ob-servation that the periclase grains or/and needles occur in the slagged zone ofbricks.

MgO来源于补炉镁砂和镁质炉墙在高温下的冲蚀和挥发，X射线和显微镜分析证实渣蚀带一些区域内存在粒状和针状方镁石晶体。

The synthetic technologies of calcium carbonate whiskers are reviewed, most of which are carried out in the normal gravity environment by adding some kind of morphology-control additive or needle-like crystal seeds of calcium carbonate supplemented with certain phosphate so as to prompt the crystal of calcium carbonate whiskers to grow in a certain direction to the reaction system.

摘 要：晶须碳酸钙的合成技术备受关注，其中绝大多数方法是在常重力场中，通过向反应物系中添加某种晶形控制剂，或预先添加针状碳酸钙晶种，并辅以能够促使碳酸钙晶体沿单一方向生长的磷酸系助剂。

Coarse-grained pyroxenes commonly contain abundant tiny or needle-like chromite inclusions with orientation,probably due to heavy shock events.

粗粒辉石晶体普遍存在微粒状或细针状铬铁矿，并具有定向分布特征，可能也与强烈的冲击变质有关。

At first, the broth was acidified, then centrifuged to get mycelia, which was heated and powdered; finally we use acetic ether to soak the powder. After that, the phase of acetic ether was washed using the solution of ammonium sulfate and the solution of ethanedioic acid, then concentrated to gain pulps. It was crystallized at 4℃.The coarse crystals was decolorized by activated carbons, the pure needle crystal of lovastatin was obtained.

发酵液经酸化处理后，离心得到菌体，烘干后过筛得到菌粉；用乙酸乙酯浸泡，乙酸乙酯相需用(NH_4)_2SO_4溶液和草酸溶液洗涤两次；乙酸乙酯相经薄膜浓缩得到浆状物，于4℃结晶，得到粗晶体；再经粉末活性炭脱色和重结晶后得白色针状结晶，为lovastatin的纯品。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。