He found a toy electric motor in a junk heap.

With OurPlay, I can easily switch to different acceleration nodes to adapt to different network environments.

通过OurPlay，我可以轻松切换到不同的加速节点，以适应不同的网络环境。

OurPlay offers a rich game library, where I can find many games I like.

OurPlay提供了丰富的游戏库，我可以找到很多我喜欢的游戏。

I often play international mobile games on OurPlay.

我经常在OurPlay上玩国际服的手游。

Strength Analysis and Experimental Research of Underground LHD Machine' Bodywork Structure

地下铲运机整机结构强度分析及实验研究

Present development and trend of Underground LHD in China

我国地下铲运机研制状况及发展趋势

Application of Virtual Prototype in the Design of LHD Working Device

虚拟样机在铲运机工作装置设计中的应用

Study on the Environmental Recognition System for Underground Remote Control LHD

地下遥控铲运机环境识别系统的研究

In spring a strong positive correlation between the LHF over the middle SCS and the precipitation in the area from the south of the Changjiang River to South China coastal regions is found.

春季，南海中部海盆地带的游热输送与长江以南至华南沿海地区的夏季降水有较强的正相关关系；

All products reveal a similar pattern in the averaged fields of that the LHF are high in the north SCS while low in the south part.

结果显示，南海多年平均的潜热通量呈北部高而南部低的结构。

Conclusion: LHF solution may preserve neonatal porcine pancreas for 36 hours, and have a wide application prospect for islet transplantation.

结论：LHF器官保存液可用作胰岛移植供体保存，具有较为广阔的应用前景。

Results The amount of pancreatic tissue water content was not significantly increased when rat pancreas were stored in LHF solution within 36 hours.

结果LHF液保存大鼠胰腺36h内，组织含水量无显著的增加；

Observing the therapeutic effect of Sodium Nitroprusside on CRF amalgamate LHF

硝普钠治疗慢性肾衰竭（尿毒症期）合并左心衰的疗效观察

Cold preservation of neonatal porcine pancreas with LHF solution

LHF器官保存液保存新生猪胰腺的实验研究

Application of LHF Rotary Cleaning Flat Bag Filter in Coal Production Process

LHF型回转反吹扁袋除尘器在煤炭生产中的应用

Guided Modes in a Four-layer Slab Waveguide with the LHM Core

包含左手材料的四层平板波导中的光导模

Transmission Characters of Optical Waves at the Interface Between LHM and RHM

光波在左右手系材料界面处的传输特性

Characteristics of Open-Type LHM Microwave Filter and Its Design

左手媒质微波空间滤波器特性和设计

Left-handed Materials ( LHM) and Its Applications in Microwave Engineering

左手材料及其微波应用

Next, the research progress of the LHM in microwave frequency band is presented.

其次概括叙述了微波波段左手材料的研究进展。

First, the concept of LHM and the methods to realize it in microwave frequency band are introduced.

首先介绍了左手材料的基本概念，左手材料在微波频段的实现方法。