Effects of different extraction treatments on performance of tangential section interface were tested for wood of Castanopsis fissa.
试验结果表明,黎蒴栲试件经苯-醇、热水、温水和冷水等抽提工艺处理后,用光学接触角测定仪测出水滴与其弦切面的接触角,比处理前均有不同程度的增大,表面自由能相应降低,而在碱抽提处理后,则水滴与其弦切面的接触角比处理前减小,表面自由能增大。
Study on three kinds of cutting systems (single-splitting-tool cutting, single-planning-tool cutting, twin-planning-tool juxtaposed cutting) for bamboo bastardface longitude cutting and the cutting force of single-planning-tool cutting resulted that both cutting systems of splitting and planning could carry out the bamboo bastardface longitude cutting and got better bamboo strips.
研究了竹材弦面纵向切削的3种切削方式(单劈刀切削、单刨刀切削及并列式双刨刀切削)及单刨刀切削时的切削阻力,结果表明:对竹材采用劈或刨的切削方式,均可进行弦面纵向切削并能获得质量较好的竹蔑。
Stripes sometimes noticeable on flatsawn face. Easily worked. Sliced veneer-flooring and wall. Sawn lumber-furniture, door-sills and flooring.
在木材弦切面可见条纹。平切单板-地板、板。板材-家俱、槛、板。
Wood rays of P. armand and P. prokoraiensis on tangential section both had two shapes,that was, uniserial wood ray and spindle wood ray.
华山松与前红松弦切面上的木射线均呈两种状态,即单列木射线和纺锤形木射线;
Mrs. Thatcher appeared, looking radiant in a smart turquoise outfit, and gave a rousing speech.
身穿一套鲜艳绿色服装的容光焕发的撒切尔夫人露面发表了扣人心弦的讲话。
He turned to face the orchestra.
他转身面对管弦乐队。
bifocal chord of a quadric
二次曲面的两焦点弦
High wall: beyond strings twanged.
高墙后面发出弦乐声。
DEVELOPMENT OF CABLE-SUPPORTED STRUCTURES IN THE LAST TEN YEARS(1)--CONCEPT OF CABLE-SUPPORTED STRUCTURES AND DEVELOPMENT OF PLANE CABLE-SUPPORTED STRUCTURES
张弦结构的十年(一)——张弦结构的概念及平面张弦结构的发展
RESEARCH OF KEY PROBLEMS OF BSS CONSTRUCTION WITH TOP CHORDS OF H-SECTION
H形截面上弦张弦梁体系施工关键问题的研究
With a bit more effort, techies could also compute ratios, inverses, sines, cosines and tangents.
如果再多花点功夫，这些科技高手还能算出比例、数、弦、弦和正切等值。
Port: A boat's left side when looking forward.
左弦：面对正前方时船只的左侧。
the orchestra faced the prospect of disbandment.
管弦乐队面临解散的前景。
The front part of the body of a stringed instrument.
面板一件弦乐器乐身的前部
Effect of Sinusoidal Dispersiens on Surface Exciton Energies;
正弦色散对表面声学激子能量的影响
Let's now examine the simplest wave form where the profile is a sine or cosine curve
现在让我们来考察最简单的波形，它的剖面图是正弦或余弦曲线。
A ridge of wood at the top of the fingerboard or neck of a stringed instrument, over which the strings pass.
琴弓指板顶部或弦乐器琴劲处木质的凸起部分，琴弦绕在上面
"The horizontal pieces forming the top and bottom of the truss are called the chords, and the sloping and vertical pieces connecting the chords are collectively called the web."
顶端和底部水平面上的桁架通常被称为弦杆,而斜面或垂直方向上连接弦杆的则被称为腹杆。
Zheng is generally made of candlenut wood, has an oblong sound box with a curved top and strings with individual frets which can be moved right and left to modulate the notes.
筝一般用梧桐木制成，长方形音箱，弧形面板，面上张弦，每弦一柱，左右移动柱码可调节音高。
the skin of his face looked drawn and tight; her nerves were taut as the strings of a bow.
他的面部拉长而紧张；他的神经如弓弦一样紧张。