失重环境

为了研究失重环境对液相烧结AlN复合材料的影响，在抛物线飞行飞机上，以碳钛燃烧反应形成的高温作为实验热源，进行了失重实验和AlN复合材料、TiC材料制备中重力行为研究。

The gravity behaviors in the combustion synthesis of Ti and carbon on the parabolic flight aircraft were investigated .

航天失重环境对空间定向的影响

Effects of Microgravity on Human Spatial Orientation in Space Flight

人牙周膜成纤维细胞在模拟失重环境下增殖的变化

Alteration of proliferation of human periodontal ligament fibroblast cells under simulated microgravity

提示BMP－2对ROS17Q.8细胞有促分化作用，在模拟失重环境下这种作用氏。

The effects of BMP-2 on ROS17 / 2.8 cells in simulated weightlessness were investigated .

4模拟失重环境和正常重力环梭下，BMPZ诱导产生MwtA的表达比值均较4〔＠导组显著增高。

Under simulated weightlessness , the ALP expression of osteoblasts induced by BMP-2 was remarkably lower than that under normal gravity .

航天中的失重环境导致航天员出现持续的骨丧失和负钙平衡现象，称为失重性骨丧失。

Bone loss of weightlessness , that is persistent bone loss and negative calcium balance phenomenon in astronauts which is caused by weightless environment of space flight .

科学家介绍，在宇宙辐射和失重环境下，有些种子可能会发生变异，这些变异种种植到地球上后，能培育出高产优质的新品种。

After being exposed to cosmic radiation and zero gravity , some seeds may mutate and produce higher yields and improved quality when planted back on earth , scientists said .

空间飞行过程中，宇航人员暴露于失重环境下，将导致骨骼系统发生结构和功能的变化，主要表现为骨量丢失，骨骼脱矿，骨力学性能下降，出现负钙平衡。

Exposure to weightlessness during space flight may lead to a state of structural and functional alteration in crewmembers skeleton system , which is manifested most clearly by the loss of bone mass and bone mineral , declines in bone mechanical function and negative calcium balance .

太空的辐射能让我们失去生命，失重的环境让我们身体虚弱，与世隔绝的状态让我们感到忧郁。

Space radiation kills us ; weightlessness weakens us ; isolation makes us melancholy .

实验设置了两组老鼠，都放置于模拟失重的环境中。

The study took two sets of rats , both of who were subjected to an environment that simulated weightlessness .

为了防止液体在失重的环境下溅出，宇航员通常只能用吸管吮吸装在袋中的饮料，但有了佩提特的这个新发明，宇航员们从此可以用杯子喝水了。

Astronauts normally drink from pouches using straws , to prevent liquids from spilling out in weightlessness , but Pettit wanted to show that they could sip from cups .

宇航员和航天员在空间站看到的壮观景象很难用语言形容。但是每天在失重的环境下工作的确艰难，而且有些时候非常复杂。

It is an understatement to say the astronauts and cosmonauts on board enjoy a spectacular view . But daily life in lower Earth orbit is hard work , and at times complicated .

失重或称微重力环境是载人航天轨道飞行中的重要环境因素，地面上失重模拟实验是航天前的重要准备工作之一。

Weightlessness ( or microgravity ) condition is one of important environmental factors for manned spaceflight during their earth orbital operation , amd the weightlessness simulation test on the ground becomes one of main preparations before manned spaceflight execution .

体外降解试验中，PBS缓冲液的PH值呈下降趋势，试样的失重率增加，环境电镜扫描试样表面出现降解现象。

The degradation experiment in vitro showed that the pH value of immersion solution decreased , the weight-loss ration of samples increased , as degradation on the surface of samples was observed as time going .

通过一种先进的实验手段研究了铝液滴在常重力和失重两种不同环境下的点火及燃烧特性。

A study of aluminum droplet ignition and combustion through an advanced experimental technique in normal and low gravity environment is presented .

航天飞行过程中，航天人员暴露于失重（微重力）环境将导致机体心血管功能状态的变化，称作心血管脱锻练，其主要表现为立位耐力不良。

Exposure to weightlessness / microgravity during space flight may lead to an altered state of cardiovascular function in crewmembers termed " cardiovascular deconditioning ", manifested most clearly by their orthostatic intolerance .

已有研究报道模拟失重可以引起内皮细胞凋亡增加，然而，有关失重或模拟失重环境下血管内皮细胞自噬性程序性细胞死亡的研究国内外尚未见报道。

Some studies had already confirmed that simulated weightlessness could lead vascular endothelial cell to apoptosis , few researches had been reported that microgravity or simulated microgravity could induce endothelial cells autophagy .

失重性骨质疏松属于继发性骨质疏松的一种，目前认为它是由航天失重环境引起的一种特殊的废用性骨质疏松，在航天事业蓬勃发展的今天，它已成为突出的阻碍力量。

Weightlessness-induced osteoporosis is a secondary osteoporosis , it is a special disuse osteoporosis caused by the microgravity environment . With the space industry become flourish , it has become the prominent hampers .