hollow sphere

When the hollow sphere packing and preparation process are same, the compression properties of HSC are controlled by choosing different diameter pore-forming agent.

空心球结构与制备工艺相同时，空心球多孔材料的密度和压缩性能可以通过选用不同直径的造孔剂来控制。

Effect of heat conduction is added to the one-dimensional flow equations of spherical symmetry, and the temperature distribution during the closure of the hollow sphere is solved by finite-difference under the condition that the material is rigid-plastic fluid and the constitutive equations are thermo-visco-plastic.

在球对称塌缩一维流动的控制方程中引入传热项的影响，采用刚塑性假设并引入热粘塑性本构关系，利用有限差分法对球壳收缩过程中的温度分布进行了计算。

This document describes structure of buoyant material about large hollow sphere that made of superlight compound material ( This material is used at ROV within 1000 meters) Under safeguard for compressive strengh cause the density of buoyant material is minimum and moisture absorption rate fits requirement.

本文探讨了超轻质复合材料大空心球的浮力材料结构（此材料适用于1000m以内无人潜器上使用）和在保证抗压强度条件下，使浮力材料的密度最小、吸水率符合要求的设计方法。

Study of space grids of stainless-steel welded hollow sphere

不锈钢焊接空心球网架的研究

The utility model is composed of a housing, a water inlet pipe, a gas inlet pipe, a water outlet pipe, a hollow sphere, a check valve, etc.

其主要结构由外壳、进水管、进气管、出水管、空心球体、止回阀等构成。

Study on Bearing Capacity of Welded Hollow Sphere in Space Truss

空间网架焊接空心球节点承载力研究

A kind of ZrO_2 hollow sphere thermal insulating materials with excellent performance is presented on the basic of an summarization of the mechanism of thermal insulating materials and the approach to improve the performance of thermal insulating materials, which can control the conduction, convection and radiation effectively.

论述了隔热材料的隔热机理以及提高隔热材料隔热性能的途径，在此基础上提出了一种性能优良的氧化锆空心球隔热材料，该材料能有效的控制热传导、热对流和热辐射；

The roof of the natatorium of Chongqing adopts quadrangular pyramid with welding hollow sphere joints.

重庆市游泳、跳水馆屋盖设计采用四角锥焊接空心球节点钢管网壳。

Hollow sphere is better than solid bead in terms of paper surface efficiency, printing gloss, color efficiency, gray level;

空心球塑料颜料在纸面效率、印刷光泽度、灰度和色效率方面要强于实心球塑料颜料。