hmd

See through head mounted display ( HMD) is a key component in the augmented reality ( AR) system.

穿透式双通道头盔显示器（HMD）是增强现实系统中的关键部件。

A series of Copolyimides, derived from hexamethylene diamine ( HMD ) , 4,4� �-diaminodiphenyl ether ( ODA ) and 3,3� �, 4,4� �-oxydiphthalic dianhydride ( ODPA ), were prepared.

采用二苯醚3,3, ′4, 4′-四 甲酸 二酐与己二胺和4, 4′-二氨基二苯醚为 单体 合成聚酰胺酸, 经热酰亚胺化制备共聚型聚酰亚胺.

The location of head mounted display ( HMD) is the essential crucial process of augmented reality system, it's veracity determines the precision of three dimension registration.

头盔显示器（HMD）定位是扩展现实系统应用中必不可少的关键过程，其定位的准确程度直接决定了三维注册的精度。

Result Normal distribution of performing time is shown when a virtual sphere is put into a drawer of standard cabinet of virtual module on a front table by subjects wearing HMD, its mean value being 36.72 s and variance being 13.798 s.

结果被试者戴头盔显示器、利用数据手套将虚拟乘员舱内抽屉中的小球放置在一台体上的作业时间服从均值36.72s、方差13.798s正态分布。采用什么标准评价？

The HMD eliminates the cost and weight associated with traditional head-up displays and simplifies cockpit design.

头盔内嵌显示器消除了与传统抬头显示器相关的花费和重量,并简化了座舱设计.

At first, based on the principle of human's eye seeing, this paper introduces a Divi-Screen stereoscopic display method after analysing the structure and working principle of HMD.

首先，针对头盔显示器的结构和工作原理，以及人眼的立体成像原理，提出了上下分屏的立体显示技术。

Since Head Mounted Displays ( HMD), data gloves, tracking systems, and powerful computer graphics resources are nowadays in an affordable price range, the usage of PC-based "Virtual Training Systems" becomes very attractive.

由于当前市场上的头戴式显示器，数据手套，跟踪系统以及性能强大的计算机图形资源比较低廉，应用基于PC的虚拟训练系统变得很有吸引力。

See through head mounted display ( HMD ) is a key component in the augmented reality ( AR ) system.

穿透式双通道头盔显示器 ( HMD ) 是增强现实系统中的关键部件.

Objective To study the sickness rate and risk factors of bronchopulmonary dysplasia ( BPD ).

目的　研究肺透明膜病(HMD) 患儿支气管肺发育不良 ( BPD ) 的患病率、高危因素.

The first one is to reconstruct a superior HMD optical system with helmet visor and Free Form Surface ( FFS) prism.

一种是用头盔护目镜和FFS棱镜重新构造HMD光学系统；

Results 18 neonates had BPD ( 24 3 % ).

结果　74例HMD中 有18例 BPD,患病率为24-3%.

Nokia is going to bring back the historic 3310 in the biggest tech comeback of all time. A homage to the Finnish giant's classic feature phone will reportedly be released later this month when HMD unveils its new range of Nokia branded devices at Mobile World Congress.

诺基亚传奇3310手机将在芬兰巨头诺基亚大举卷土重来之际重出江湖。据报道这款经典手机将在本月的世界移动通信大会上重新发布，届时诺基亚手机制造商HMD公司还将推出一系列诺基亚新款设备。

Imaging based on goggles is the main technology of see-through HMD. However, its optical system is bulky and occupies much space inside the helmet.

基于护目镜成像是目前主流的穿透式头盔显示技术，但是其光学系统笨重且占据着头盔内大量空间。

The HMD eliminates the cost and weight associated with traditional head-up displays and simplifies cockpit design.

头盔内嵌显示器消除了与传统抬头显示器相关的花费和重量,并简化了座舱设计.

To make that happen, Foxconn, which put up most of the cash, and HMD Global, a private-equity-backed Finnish group led by former Microsoft and Nokia executives, agreed to buy Microsoft's so-called feature phone unit for$ 350 million.

为了实现这个目标，富士康和HMD Global同意以3.5亿美元买下微软公司所称的功能手机分部。

A series of Copolyimides, derived from hexamethylene diamine ( HMD ) , 4,4� �-diaminodiphenyl ether ( ODA ) and 3,3� �, 4,4� �-oxydiphthalic dianhydride ( ODPA ), were prepared.

采用二苯醚3,3, ′4, 4′-四 甲酸 二酐与己二胺和4, 4′-二氨基二苯醚为 单体 合成聚酰胺酸, 经热酰亚胺化制备共聚型聚酰亚胺.

In this paper, the author introduces the principle of Head Mounted Display ( HMD) and 3D Auditory System by practice.

本文结合作者实践，介绍自制头盔显示器（HMD）及三维音响系统的原理。