This paper presents the qualitative analyses of the theory of flying objects testing the echo of a motive object out of mixed ground waves.

本文对飞行体在地杂波中检测运动目标的反射波时的基本原理，作了理论分析。

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This presentation introduces a mixed ground EPBM to be adaptable to tunnelling requirements in Singapore, chiefly in terms of geological adaptability and standard consistency.

本报告主要从地质适应性和标准适应性两个方面，介绍适应新加坡隧道工程要求的复合式土压平衡盾构机。

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Fracture energy of concrete was measured for studying the fracture brittleness of the high performance concrete mixed ground granulated blastfurnace slag (GGBFS) and silica fume.

采用混凝土断裂能试验研究了使用磨细矿渣和硅灰配制的高强度高性能混凝土的断裂脆性。

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Swiss Federer made sure of an early night, hitting 12 aces and 38 winners as he mixed elegant ground strokes with sublime drop shots and passes to overwhelm his 20-year-old Argentine opponent.

CNN: Roddick faces Federer in semifinal showdown

There will be mixed feelings, because those mixed feelings on the ground among the populace are inevitable in wartime.

CNN: How will leaked photos impact U.S. mission in Afghanistan?

Currently, Spirit is examining a series of specimens that were perhaps formed when wind-borne volcanic ash fell to the ground, mixed with water and eventually formed into layered rock.

CNN: Mars rovers working overtime