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- sound absorption area 吸声面积
- It indicates that straw-based wallboard has characteristics of low density, good heat insulation and sound absorption. 笔者综述了3种墙体材料生产工艺、产品性能及其用途的研究现状和发展趋势。
- The nitrate concentration below the root absorption area was obviously higher than that in the root absorption area. 其中根系吸收区下的硝态氮含量明显高于吸收区;
- Horniness beaverboard sound absorption, waterproof properties is good, hard usage, construction is convenient. 硬质纤维板吸声、防水性能良好,坚固耐用,施工方便。
- In addition, treatments of the two CRFs significantly increased both total root absorption area and root active absorption area. 明显增加了根系总吸收面积和有效吸收面积。
- Its good characteristics include low cost, high durability and good property of sound absorption. 它具有成本低、耐久性高、吸声性能好的特点。
- The sound absorption coefficient of the material was tested by standing wave tube method. 采用驻波管法测试材料的吸声系数。
- The sound absorption property of eucalypt wood of 0.5 cm in thickness is much better than that of 1.0 cm in thickness. 0.;5厘米厚的锯材的吸声性能好于1
- The sound absorption coefficient of three kinds OSB wallboard were tested by the stationary wave method. 采用驻波管法测定了3种定向结构板(OSB)复合墙体的吸声系数;
- In the light stamen and pistil heart the flow butterfly sucks the sound absorption. (只要意思接近)翻译:“挥去快乐的天堂时光,而坠入诱惑的梦想世界。
- The function of the curtain is sound absorption, sound insulation, adiabatic above all, prevent cold, adjust the light. 窗帘的功能首先是吸声、隔音、隔热、防寒、调节光线等。
- Sound absorption materials is always used in controlling reverberation time in the acousti-cal design of studios. 对演播厅混响时间的控制,在声学设计上往往通过安装吸声材料来实现。
- The results showed that rice special fertilizer combined with synergist promoted the growth of rice, and the total volume, total absorption area and active absorption area of rice root system significantly increased. 盆栽试验结果表明,配方肥增效剂能显著促进根系的生长,极显著提高根系体积、总吸收面积和活跃吸收面积,但对根系活力影响不大。
- The aim was to research the sound absorption properties of graded polyurethanes at different incident angles. 主要研究梯度聚氨酯在全入射角下的吸声性能。
- The stem diameter and root dry weight of the tomato seedlings sowed in the substrates with 500 g/m~3 N,1 000 g/m~3 P,and 1 000 g/m~3 K increased rapidly,and root activity and root absorption area were significantly higher than that of other treatments. 在氮用量为500 g/m3、磷(P2O5)为1 000 g/m3、钾(K2O)为1 000 g/m3的育苗基质中,番茄幼苗茎粗、地下干重的增加明显加快,根系活力和根系吸收面积显著高于其它处理的幼苗。
- Numerical and emulational results of sound absorption coefficient from some typical structures are presented. 给出了一些典型结构的吸声系数的仿真结果。
- Through the tele-microscope, the microvilli lying the gut of the group B and C was tidier, thinner and longer than that of control group, this indicated the absorption area became bigger and the FCR became more efficient. 电镜观察发现C组和B组的鳗鲡小肠细胞微绒毛排列整齐、细而长,吸收面积增大,从而提高了对饲料利用率,D组鳗鲡小肠细胞的微绒毛稀疏、短,排列不均匀。
- 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;
- Report on the Determination of Sound Absorption Coefficients of a Renhurst Rippletone Ceiling System in a Reverberation Room. 怡谱佳吊顶声学混响室法吸音系数报告。
- Inside wall of pump chamber is adhibited with sound absorption material, equipped with double layer sound isolation door. 水泵房等房间内壁贴吸声材料。采用双层隔音门。