Fiber layer ply increases, resonance absorbs frequency to increase to unit weight of; of shift of low frequency direction, sound power absorption coefficient increases in the begining more apparent, subsequently rate of hole of; of amplitude hasten delay increases, hempen fiber sound power absorption coefficient increases gradually.

纖維層厚度增加h国产在线无码观看视频，共振吸收頻率向低頻方向移動(dòng)；容重增加欧亚洲黄色，吸聲系數(shù)開始時(shí)增加比較明顯国产精品ⅴa无码一区二区，隨后增幅趨緩；孔隙率增加又粗又黑欧美硬大视频，大麻纖維吸聲系數(shù)逐漸增大天天一级欧美。

The sound from the small hole of sword is much weaker, no higher than the sound of ghost.

惠子語帶玄機(jī)的說：「吹蕭笛的聲音響亮，吹劍環(huán)那個(gè)小孔的聲音就低多了免费一级无码淫片AA片，它只有那么一絲絲微弱的響聲无码理论在线观看；堯舜被一般人稱為圣人，可是比起戴晉人的一席話羞羞色院91精品网站免费，那堯舜也不過是那吹劍環(huán)者国产bd在线，其主張是微不足道的。

Pull out the jig dowel posts, get your hand into the sound hole and carefully peel away the cardboard jig.

拔出夾具木釘員額精品国产爱，讓你的手到健全的漏洞欧美人与拘交A片视频网站，認(rèn)真剝離紙板夾具。

Test fit the jig by placing it into the sound hole and poke the posts up thru the E string peg holes.

測試適應(yīng)夾具把它納入健全和戳洞的職位成年人免费在线网站，通過聚乙二醇的E字符串漏洞欧美喷水视频在线观看网址。

The home-made 7-hole with wider sound range through hole arrangement was tested and found with no significant difference between actual and theoretical sound scales.

五、自行研制七孔配孔指法而得到音域較廣的陶笛免费直接可以看的黄色网站，經(jīng)檢定結(jié)果得知国产激情毛片在线视频，其實(shí)際與理論音階分布無顯著差異。

Yin Gete shows the perforated pipe installed in the standard plate resistance is by the sound hole of the flow Mach number, and coefficient proportional to the beam.

因葛特證明加勒比视屏，裝在管路中的穿孔平板其標(biāo)準(zhǔn)的聲阻是與通過小孔的流束的馬赫數(shù)及系數(shù)成正比亚洲皇冠成人无码影院在线观看。

Guiding himself by the sound, he made his way through the gathering darkness to the foot of an old beech tree, with a hole in it, and from out of the hole came a feeble voice, saying 'Ratty!

他循著聲音的方向，穿過越來越濃的黑暗在线欧美一级片，來到一株老山毛櫸樹腳下亚洲人成亚洲精品。從樹下的一個(gè)洞里，傳出一個(gè)微弱的聲音日韩一级黄片一区二区，說：鼠兒青青国产在线视频！

Our main products are including: Through wooden sound absorption board, Hole wooden sound absorption board, Cloth skill sound absorption board, Lignin sound absorption board and so on.

產(chǎn)品主要包括：槽木系列吸音板、孔木系列吸音板、布藝系列吸音板欧美日韩免费精品区、木質(zhì)擴(kuò)散系列等高清一级电影。

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NOTE: before opening up a tube of superglue near your beloved guitar, do what I didn't do and cover the entire guitar top with plastic food wrap film or painter's low tack masking tape, cut out for the sound hole and poke through at the bridge E string holes.

注：在開辟了管膠水附近你心愛的吉他日韩毛片视频网站中文字幕，做什么欧美中文字幕日韩综合四季，我沒有這樣做，并覆蓋整個(gè)吉他頂端食品包裝用塑料薄膜或畫家的低粘性膠帶99riav在线，剪下健全洞欧美又粗又长的A片在线观看，捅在橋上é字符串漏洞。