弦

Only two strings of the erhu playing is highly rich in the left hand there Vibrato, harmonics, vibrato, portamento, pizzicato, wheel means; right hand, even the bow, sub-bow, Dayton bow, jumping bow, trembling bow, flying bow, broken bow and so on.

只有两根琴弦的二胡的演奏手法十分丰富，左手有揉弦、泛音、颤音、滑音、拨弦、轮指；右手有连弓、分弓、顿弓、跳弓、颤弓、飞弓、碎弓等。

Open Linear Encoder includes main grating scale and optical encoder head. This optical encoder head includes LED light source, optical detector module, and secondary phase-grating. LED light will pass through the plano-convex lens and produces parallel light. As the parallel light pass through secondary grating, the quadratic image display on the main grating scale. And the Moire interference will be reflected from the main grating scale and detected by optical detector module, as there is a relative shift between the main and secondary grating. From detecting the periodic sinusoidal signal with phase difference 90°, the period represents the grating pitch, using the counter to detect the number of periodic signals to get the displacement, and we can adapt the technology of electron subdivide further to increase the resolution of measurement .

反射式光学尺包括主光栅尺及光学读头，光学读头包含LED光源、光侦测器模组及相位式副光栅，LED光源经平凸透镜，产生平行光穿透副光栅后，副光栅之二次成像投射在反射主光栅尺上，当主、副光栅因相对运对产生之Moire干涉经主光栅尺反射至光电检测器，检出相位差90°之周期性弦波讯号，其周期代表栅距，因此可用计数器检出周期性讯号数目得到位移量，可进一步采用电子细分割技术提高解析度。

His mother used to tell him that he had lived three lives, but even she miscounted. He has been a plasterer, banjo player, stand-up comic, union agitator, political activist, film extra, award-winning actor and unwilling guest of Her Majesty's prison service.

他母亲过去常说"我儿子身兼三职"，不过即使这样，他母亲都少算了，他做过泥水匠，五弦琴乐师，单口相声演员，组织工会造反的煽动者，政治积极分子，电影里跑龙套的临时演员，得过奖的演员，当然也很不情愿的"光顾"了女王陛下掌管的监狱。

It, static wait for person having a reason to hold it in both hands case, first quarter, gift from now on the force of its life, again in the hand that the hand of by father generation meets young man and woman, the continuance of message of the life that finish... the lifetime of person must have a high grade rigid list, not be the fame because of the brand, not be for play the peacock rich.

它，正静待有缘人来将它捧起、上弦，从此赋予它生命的力量，再经由父辈的手交到儿女的手中，完成生命讯息的延续……人的一生一定要拥有一块优质的机械表，不是因为品牌的名气，不是为了炫耀自己有钱。

A musical instrument with strings stretch over a flat sounding box; played with a plectrum and with fingers.

用弦覆盖一个扁平发声盒的乐器；用手拨动琴拨弹奏。

An instrument composed of a flat sound box with about30to40strings stretched over it and played horizontally with the fingertips or a plectrum.

齐特琴一种由扁形音箱和大约30至40条弦组成的乐器，平放着用指尖或拔子来演奏

During the Northern and Southern Dynasty (420-589 AD), a similar instrument with a crooked neck and four or five strings was introduced through the Silk Road from little Asia, known as the Hu Pipa (Hu stands for "foreign" in Chinese), which was played horizontally with a wooden plectrum.

到了公元五、六世纪随着中国与国外民族文化交流的加强，从西域即中亚地区传入一种曲项琵琶，当时称作"胡琵琶"。其形状为曲颈，梨形音箱，有四柱四弦。横抱琵琶用拨子演奏。

Structure-wise, there usually is an introductory section, a fugue and a postlude, but this basic scheme is very frequently expanded: both BuxWV 137 and BuxWV 148 include a full-fledged chaconne along with fugal and toccata-like writing in other sections, BuxWV 141 includes two fugues, sections of imitative counterpoint and parts with chordal writing.

结构明智，通常有一个导言部分，一个赋格和postlude，但这一基本计划是非常频繁地扩大了：既BuxWV 137和BuxWV 148包括一个完整的，以及成熟的舞曲真菌和托卡塔，其他部分一样书面BuxWV 141包括两个赋格曲，对位的模仿与弦写作部分章节。

You would not be surprised to learn that all the people there the spectacled postmistress the cobbler the retired school master and the rest had suffered a change too and had become queer elvish beings purveyors of invisible caps and magic shoes.

所有住在那里的人们：戴眼镜的邮政局局长、鞋匠、退休的小学校长以及其他人，如果你听说他们都改弦易张，成立古怪精灵般的人物，能为你提供隐身帽和魔术鞋，你也不会感到不可思议。

For lower chord,the maximum secondary stress was less than 20 percent of the primary stress and the effect is small, therefore it can be neglected in design.

对于下弦杆，次应力的最大值均不超过主应力的20%，影响较小，设计时可不考虑。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。