间隙的

Based on the average lattice and average atom models, effects of interstitial impurities on the valence electron structures and phase transformation of Ti-Al alloys are analyzed, and the degree of descension of bond energy, melting point and liquidus temperatures as affected by interstitial impurities are calculated by the bond energy formula of the EET.

应用固体与分子经验电子理论的平均晶胞和平均原子模型分析计算了间隙杂质对Ti-Al合金价电子结构和相变的影响。同时根据该理论的键能公式计算了间隙杂质影响下的键能、熔点和液相线的变化。

Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.

结果表明：授粉后，花粉随即萌发，花粉管进人羽毛状柱头分支结构的细胞间隙，继续生长于花柱至子房顶部的引导组织的细胞间隙中，而后进入子房，在子房壁与外珠被之间的缝隙中向珠孔方向生长，花粉与花粉管均具有明显的绿色荧光。

A gear H62 which made in yellow brass with the same mode number m=0.34, 2mm thick and had a center hole, when the gap get C=0.5%t , and punched with compound punching die, and the dimension accuracy reached IT7, the part have a flat surface ,the verticality of tangent plane reached 89.5°, its roughness Ra magnitude are 12.5μm, height of burr are 0.10mm; and the punching part are punched with progressive die, the gap C=7%t , initial accuracy are IT11, and have an more rough surface, even can see the gap with eyes.

例如料厚t=1.5mm的H62黄铜冲裁件，选用C≤40%t单边Ⅰ类小间隙冲裁比选用C≤8%tⅢ类大间隙冲裁，冲件固定误差将加大40%～60%，精度至少降一级。此外，采有无搭边排样，冲件的误差要远大于有搭边排样冲件。无搭边排样冲件。无搭边排样冲件的精度低于IT12级，而多数有搭边排样的冲件精度在IT11～IT9级之间，料厚t＞4mm的冲件，尺寸精度会更低一些。

Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.

结果表明：授粉后，花粉随即萌发，花粉管进入羽毛状柱头分支结构的细胞间隙，继续生长于花柱至子房顶部的引导组织的细胞间隙中，而后进入子房，在子房壁与外珠被之间的缝隙中向珠孔方向生长，花粉与花粉管均具有明显的绿色荧光。

The numerical results show that:(1) the throughflow wake is considerably influenced by the tip clearance. The low-kinetic-energy fluid accumulated in the shroud/pressure side of the unshrouded impeller, but in the shroud/suction region for 0.0 tip clearance;(2) there possibly exists an optimum size of the tip-clearance which is not the zero tip clearance to make the flow loss minimized.

研究结果表明，(1)NASA低速大尺度离心压缩机半开式叶轮的低速尾迹区在压力面与轮盖的角区，而相应的闭式叶轮的低速尾迹区聚集在轮盖的中心位置；(2)数值实验表明，叶顶间隙并非越小越好，可能存在一个最优间隙，使得叶轮流动损失最小。

Firstly, the diffusion of oxygen atom from the SFCC to SHCP on Zr(0001) surface is calculated. The active energy for the diffusion is 0.77eV. Secondly, the diffusion of oxygen atom from the SFCC to Octa(2,3) via Octa(1,2) is calculated too. There are 2 energy barriers for oxygen atom to overcome, the active energies are 2.14eV and 2.57eV.

我们首先计算了氧原子从稳定的表面面心立方位置向表面六角密排位置的扩散，其扩散激活能为0.77eV；然后计算了氧原子从稳定的SFCC位置扩散到表面下第1层与第2层之间的八面体间隙Octa(1，2)位置，然后继续向表面下第2层与第3层之间的八面体间隙Octa(2，3)位置扩散，在此过程中氧原子需克服2个能垒，其激活能分别为2.14eV和2.57eV。

Our calculated results show that the surface face-centered cubic sites are the most favorable sites at 0.25 monolayer, however, the system with a half of the oxygen adatoms taking the fcc sites and the other half taking the octahedral sites between the second and third layer Octa(2,3) is the most stable configuration at 0.50 ML. When the oxygen coverage is larger than 1.0 ML, each of the oxygen atoms prefer separately taking the fcc and octahedral sites such as Octa(2,3), Octa(4,5) and etc. in the alternate layers.

我们的计算结果表明，在覆盖度为0.25单层时，氧原子占据表面面心立方位置最稳定；在覆盖度为0.50ML时，氧原子同时占据表面fcc位置及第二层和第三层之间的八面体Octa(2，3)位置最稳定；在覆盖度大于等于1.00ML时，氧原子喜欢同时占据间隔一个间隙层的表面和八面体间隙位置，如表面fcc位置、第二和第三层之间的八面体Octa(2，3)位置、第四和第五层之间的八面体Octa(4，5)位置等。

The opening of the valve body in a leading role in the orientation of any reciprocating parts, in the active pieces into fixed at the minimum radial clearance of not less than 0.7mm, valves should be in a spy state, the activities of parts and fixed parts Minimum radial clearance of A42C Type Pound-Grade Low Lift Spring Loaded Safety Valve not less than 0.125mm.

阀体中对阀的开启起主导作用的任何往复运动的导向零件，在活动件进人固定处的最小径向间隙不应小于0.7mm，阀处于伺应状态时，活动件与固定件的最小径向间隙不应小于0.125mm。

The opening of the valve body in a leading role in the orientation of any reciprocating parts in the active pieces into fixed at the minimum radial clearance of not less than 0.7mm valves should be in a spy state the activities of parts and fixed parts Minimum radial clearance ofA42C Type Pound-Grade Low Lift Spring Loaded Safety Valve not less than 0.125mm.

阀体中对阀的开启起主导作用的任何往复运动的导向零件，在活动件进人固定处的最小径向间隙不应小于0.7mm阀处于伺应状态时，活动件与固定件的最小径向间隙不应小于0.125mm。

House's air impact moulding is a way to impact the sand with general impact flask in an enclosed impact house.

仓式气冲造型是指在密闭的冲击仓里用普通砂箱进行冲击紧实的一种方法，其关键是砂箱周围冲击仓的间隙体积本文研究了间隙率对仓式气冲造型紧实效果的影

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。