气密

The influences of Halbach magnet axial length on the leakage flux density are analyzed. The relationship between the key design parameters of motor, such as leakage coefficient and the calculated length of the armature, and the structure parameters of motor are obtained.

通过大量的计算，探讨了Halbach阵列永磁电机在转子无铁心情况下影响气隙磁密的各种因素，分析了不同Halbach磁体轴向长度对端部漏磁的影响规律，给出了无铁心永磁电机漏磁系数、电枢计算长度等主要设计参数随电机结构尺寸的变化规律。

In order to explore the influence of the interactions between particles and between gas and particles on the formation of heterogeneous flow structure, a computational study was carried out by using a two-fluid model based on the particle kinetic theory.

应用双流体模型 CFD模拟的方法，从恢复系数和曳力两方面，研究了气固密相流化床中颗粒之间和气固相之间的相互作用对床内非均匀流动结构形成与变化的影响。

In order to satisfy the high production cultivation technology of the soybean,a high speed,single plate type suction seed metering device has been developed.

为满足大豆&暗垄密&高产栽培技术而研制了高速单盘精密双条气吸式排种器，该机台架性能试验表明：在真空压力为0。

In order to satisfy the high production cultivation technology of the soybean,a high speed,single plate type suction seed metering device has been developed.The experiment of gantry performance indicated that the single qualified rates of inner and outer rows are bigger than 90.00%;the leak rates and re-plant rates are lower than 10.00% under the 0.004 MPa vacuum condition and the 1.17r·s~(-1 rotation speed of planting plate.

为满足大豆&暗垄密&高产栽培技术而研制了高速单盘精密双条气吸式排种器，该机台架性能试验表明：在真空压力为0.004 MPa条件下，排种盘转速低于1.17 r.s-1时，内、外条单粒合格率均大于90.00%，漏播率和重播率低于10%，分条性显著且排种性能稳定，能够满足大豆双条高速精密播种的要求。

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。