The head is made of goatskin or fish skin which needs to be heated to obtain the right sound. Its thin, responsive drumhead and resonance help it produce a distinctively crisp sound.

鼓面多以山羊皮或魚皮制成欧美色色日韩，演奏前加以溫?zé)嵫侵藁粕夥压劭矗梢援a(chǎn)生極佳的共鳴效果及清脆的鼓音人人搞,人人爱,人人操。

It is heated via an open fire and electric radiators.

它是通過加熱明火和電熱器黄网站在线永久免费播放。

To improve temperature uniformity,trolley electric furnace heated by three districts, in accordance with temperature arrangement method arrange heating elements, compensation for loss of furnace heat mouth, I District II District III district heating elements layout of the different, but the car high-precision temperature furnace heating and insulation in the process of maintaining three districts temperature consistent.

可為用戶定做各種規(guī)格尺寸高精度高溫臺車電爐尤物视频网在线。為提高爐溫均勻性日本黄色网站软件，臺車電爐采用三區(qū)加熱，并按均溫布絲法布置加熱元件欧美高清国产在线有码，為補償爐口熱損失3344e国产在线观看，I區(qū)II區(qū)III區(qū)加熱元件布置范圍各不相同，但使高精度高溫臺車電爐在升溫及保溫過程中保持三區(qū)均溫一致久久经典国产视频。

As a matter of fact, the previous ways belong to resistance-heated method. Because of uneven heating and some other causes, these methods have a great harm to the life-span of electrolyzer.

這些方法從本質(zhì)上來講均屬于電阻加熱法欧美国产日韩另类综合在线，由于加熱不均等原因，對鋁電解槽的壽命都有致命的影響日韩综合色图导航。

An experimental study on the ignition behavior of pulverized coal stream heated by the electromagnetic induction was presented.

試驗研究了一種在感應(yīng)加熱情況下久久av一区，煤粉氣流著火的行為特征。

For coking, electro-chemical aluminum foil, mainly used for blocking the process down too long, so that the audio-visual aluminum foil a portion of a significant amount of time and electrothermic high temperature in contact with the plate in the incidence of heated Coke phenomenon, such as graphic after pressing his membership card will be going to faint.

對于電化鋁箔焦化欧美性爱在线视频黑白配，主要是燙印過程中停機過久久久免费色色视频，使電化鋁箔的某一部分較長時間與電熱高溫印版接觸而發(fā)生受熱焦化現(xiàn)象，圖文燙會員卡制作后就會發(fā)暈久久只出精品。

At present the main products are eight series ,morethan thirty kinds and hundred specifications,including ordinary high----grade adjustable temperature universalelectric furnace,directly----heated adjustable temperature and thermostatic digital display electrothermic jacket; ele----ctrothermic plate; magneticagitator, electric mixer machine, water bath kettle; dryer electric resistance furnace; intelligent blurring control temperature instrument, digital display thermometer; petroleum analytical instrument , teaching aid etc.

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Her large fan winnows wind towards her heated faceneck and embonpoint.

她手中那把大扇子不住地朝她那熱騰騰的臉涩涩涩涩涩涩、脖子和富富態(tài)態(tài)的身軀上扇著秋霞在线观看视频。

Produces plastic artificial leather embossing roller,mirror roller,hot roller,anilox roller,oil heated roller,peripheral drilling roller for paper making machine、steel to steel calendering roller and rubber roller. gy also produces metal embosser machine,three roller calendering machine,plastic extrusion assembling machine,filming machine,plastic extrusion plate production line,pvc plate production line,embossing devices etc.

公司擁有大型精密機床三十六臺套成年人网站在线视频，電鍍流水線三條想看一级片在哪里看，德國激光原裝雕刻機貳臺，全套電腦制版欧美又乱又伦观看、分色国产在线黄色小、激光照排系統(tǒng)，臺灣激情女人综合网、日本引進的皮紋輥雕刻設(shè)備亚洲综合在线视频小说，年產(chǎn)各類壓花輥（塑料人革壓花輥、鏡面輥日韩超清一区二区三区无码视频、熱軋輥一区二区美女又爽又粉嫩、網(wǎng)紋輥、油加熱輥AAAA激情影片激情影院、造紙機械周邊鉆孔軋輥稀缺资源网禁美女、鋼對鋼對軋輥、橡膠輥）13000余根久久精品全国免费观看AV。

If this kind of metal is heated to high enough temperatures, it will emit light.

若將這種金屬加熱到夠高的溫度亚洲欧美中文乱伦，它就會放出光。