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- The radar battle still rages today with the development of Stealth bombers, which avoid detection due to a radar absorbent surface and by bouncing radar beams off at angles. 随着隐形轰炸机的发展，雷达战时至今日仍然十分盛行，这都是由于雷达表面的吸收剂能够在某一角度弹回波信号。
- The results showed that : The number of secondary roots、the dry weight、the absorbent surface total area and activ absorption area 、activity of TTC was different in various degrees of water deficit. 结果表明：水分胁迫显著影响水稻单株次生根数、根系干重、根系吸收总面积、活跃吸收面积和根系活力；
- The two rooms both adopted American Milliken carpet and high-class beech surface sound absorbing wall, which can ensure the comfort and privacy of the meeting. 两处会场均选用了美国Milliken地毯和高档枫木饰面吸音墙面，可保证会谈的舒适及私密。
- Behavior of Underwater Sound Absorbent Rubber 水下吸声橡胶的性能研究
- A new type of porous sound absorbing material was made from super-strength gypsum and glass fiber. 摘要以高强石膏为胶凝材料，内掺玻璃纤维，制备出一种新型多孔吸声材料。
- a roller that has an absorbent surface used for spreading paint 用于扩散涂料的具有吸收性表面的圆筒
- A new sound absorbing foamed compound mainly made from PVC resin,EPR and rockwool has been investigated by foaming process. 以PVC树脂、EPR和岩棉为主要原材料用发泡方法制成了一种中低频吸声性能优良的新型泡沫吸声材料。
- The influence of the diameter of the absorber, wind speed and the emissivity of the absorber surface on the equilibrium temperature have been discussed. 讨论了吸收器直径、风速和吸收表面发射率对平衡温度的影响。
- A new sound absorbing material that is good in sound absorbing at the low frequency and high frequency is made from PVC and rockwool in this paper. 利用PVC和无机物等研制了一种性能优良的吸声材料。
- Since plant root shape is very not reg ulation, it is very difficult for plant study worker to measure plant root, espe cially to measure absorbing surface area of plant root. 但植物根的形状很不规则，对其形状的几何测量对植物研究工作者来说，一直是一件十分困难的工作，特别是根吸收表面积的测量。
- Features : good abrasion resistance, ventilation, permeability, water preservation, heat insulation, sound absorbency and stability. 特点：良好的耐磨性、通风、透气性、防水、隔热、吸音和高稳定性。
- a roller that has an absorbent surface used for spreading paint. 用于扩散涂料的具有吸收性表面的圆筒。
- Thecapability of preventing burning, self-extinguishing, heat-insulation , smoke suppressing, sound absorbing and shockproof.. 具有阻燃、自熄、隔热、消烟、吸音、抗震等性能。
- A new type of sound absorbing materials mainly made from low alkaline cement and expanding pearlite has been investigated on the basis of sound absorption principle. 摘要以低?A水泥和膨胀珍珠岩为主要原料，辅之以分散性良好的增强剂聚丙烯纤维，研制出一种新型吸声材料。
- This compound materials used in absorbing material is with sound absorbing function and light quality, wide band, good compatibility and strong inoxidizability. 这种复合材料用于吸波材料，它不仅具备良好的吸波功能，还兼备质量轻、宽频带、兼容性好和耐腐蚀性强等优点。
- The acoustical properties of compound impedance in a double layer sound absorbing structure is studied,Base on that,A model is constructed to optimize the double layer structure. 研究了由穿孔板及吸声材料构成的双层阻抗复合吸声结构,在此基础上建立了其声学性能模型,并通过建立优化数字模型,对其结构的各个几何参数和物理参数进行了优化设计。
- Sound Absorbent Material Made from Waste of Polished Brick 抛光砖废料制备吸音材料
- A sound mind is inseparable from a sound body. 健全的精神是与健康的身体是不可分割的。
- Alarmed at the first sound, we hit the dirt. 第一声警报一响我们就迅速卧倒。
- He has told a story which sound not objective. 他讲了听起来不真实的一个故事。
