查询词典 needle crystal

The crystallization form of porous glass-ceramics belong to volume crystallization; the parawollastonite which was the main phase was monocline chain structure ZM type wollastonite, with long needle crystal or short rodlike crytal.

为了研究多孔微晶玻璃的保温性能，根据伟晶岩多孔微晶玻璃的内部组成以及孔隙率情况，作者提出了三种热传导的理想等效物理模型，推导出了数学公式，验证了多孔微晶玻璃的导热系数。

A small, dark, needle-shaped crystal.

教堂的顶端是一个针尖状结构。

A small, dark, needle-shaped crystal .

与植物、动物或晶体的有针或针状部分相关的。

High supersaturation tends to the formation of needle crystal.

由此可以获得形成各种晶型及水化物的有利条件。

A white needle crystal was isolated and purified on systematic extraction of the alkaloid by silica gel column and gradient sublimation from Oxytropis glabra.

摘要采用生物堿系统提取、矽胶柱层析分离及梯度升华技术从小花棘豆干草粉中分离出一种白色针状结晶。

The protection of wollastonite needle crystal structure were from crush stage by use the long jaw type crusher.The forces dinted on the mineral are mainly squeeze and friction,avoided smashing,so the needle crystal structure of minerals can protect availably.

对制备超细高长径比硅灰石的研究从破碎阶段开始就注重对其针状晶体的保护，采用长腔颚式破碎，使破碎作用于硅灰石矿物上的力分别以挤压力和摩擦力为主，避免过粉碎，可有效的保护粗颗粒硅灰石的针状晶体结构。

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。

If the number of bad equivalents is greater than 100, but if your crystal contains heavy scatterers (for Mo radiation, atoms with atomic numbers greater than 18), or if the crystal was a needle or a very thin plate, skip to next step.

如果这个值大于100了，而且你的晶体中有大于18号的重原子，或者是你的晶体是针状或非常薄的片晶，大于100是可以接受的。

Results showed that the needle crystal of calcium oxalate hydrate(C2CaO4·H2O)was one of the major stimulating components of fresh taro leaf petioles,and its shape,and contents related to the stimulation of fresh taro leaf petioles.

结果显示：芋杆中含有的草酸钙针晶为芋杆的主要刺激性成分之一，其晶形、含量与芋杆的刺激性有关。

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。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了