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From traditionary nucleus pulposus exsection to spinal fusion,endoscope and minimally invasive techniques,and prosthetic disc nucleus and artificial disc replacement in recent years, however,they relieved clinical complaint temporary by means of the destruction of structure and function of lumbar intervertebral disc.

從傳統(tǒng)的髓核摘除術(shù)到脊柱融合術(shù)人人干人人艹超碰、內(nèi)窺鏡和微創(chuàng)技術(shù)及近年開展的人工髓核和椎間盤置換術(shù)黄色日，但它們都是以破壞椎間盤結(jié)構(gòu)和犧牲生物力學(xué)功能為代價(jià)的，不能阻止和逆轉(zhuǎn)椎間盤退變日韩新片免费无码观看，因此椎間盤退變的基因治療和組織工程成為研究的熱門課題久久激情免费视频。

See Floppy disc, Hard disc, and Winchester disc.

參閱軟碟，硬碟和溫徹斯特碟欧美国产综合几欧美视频。

A memory controller allows a floppy disc drive to intermittently read sector by sector data from the disc for supply to the buffer memory or intermittently write sector by sector to the disc data supplied from the buffer memory.

存儲(chǔ)器控制器讓軟盤驅(qū)動(dòng)器逐個(gè)扇區(qū)斷續(xù)地從盤讀取傳輸?shù)骄彌_存儲(chǔ)器的數(shù)據(jù)或?qū)木彌_存儲(chǔ)器傳輸?shù)臄?shù)據(jù)逐個(gè)扇區(qū)斷續(xù)地寫入盤黄色视频插。

The oil-quenching tank uses the steel plate structure, has the square shape, the rectangle, the circular, in the fuel tank the installment has the electric heating tube, outside the trough the installment has the oil pump, the stainless steel disc heat interchanger, the automatic oil constant temperaturecontrols the warm cabinet, its principle of work: When the work piece enters fuel tank quenching to cause frequently the oil temperature elevates, the oil pump starts to work, sucks in the stainless steel disc heat interchanger fuel tank's in high temperature oil, this time cools the circulating waterto put through automatically, carries on the heat transfer through disc heat interchanger's multi-layer stainless steel plate trough, causes the quenching oil which the process cools to return to the oil-quenching tank again, so moves back and forth the circulation, achieves the fuel tank to decreasetemperature the goal.

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The quenching oil trough uses the steel plate structure, has the square shape, the rectangle, the rotundity, the electric heating tube installed in the fuel trough , the oil pump and stainless steel disc heat interchanger installed outside of the trough, the automatic oil constant and controlling temperaturetank, its principle of work: When the work piece enters fuel trough quenching to cause frequently the oil temperature elevates, the oil pump starts to work, sucks in the stainless steel disc heat interchanger fuel tank's in high temperature oil, this time cools the circulating water to put through automatically,carries on the heat transfer through disc heat interchanger's multi-layer stainless steel plate trough, causes the quenching oil which the process cools to return to the oil-quenching tank again, so moves back and forth the circulation, achieves the fuel tank to decrease temperature the goal. When the

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The oil-quenching tank uses the steel plate structure, has the square shape, the rectangle, the circular, in the fuel tank the installment has the electric heating tube, outside the trough the installment has the oil pump, the stainless steel disc heat interchanger, the automatic oil constant temperature controls the warm cabinet, its principle of work: When the work piece enters fuel tank quenching to cause frequently the oil temperature elevates, the oil pump starts to work, sucks in the stainless steel disc heat interchanger fuel tank's in high temperature oil, this time cools the circulating water to put through automatically, carries on the heat transfer through disc heat interchanger's multi-layer stainless steel plate trough, causes the quenching oil which the process cools to return to the oil-quenching tank again, so moves back and forth the circulation, achieves the fuel tank to decrease temperature the goal.

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The results show that the mass density of disc galaxies increases an order of magnitude from the early-type disc galaxies to the later one, oblateness decreases to minimum at Sd,m, and then increases Having excepted SO and IrII, these parameters vary with the type of disc galaxies monotonicly.

早先得出早型盤星系的質(zhì)量密度要比晚型高一個(gè)量級(jí)Ⅲ。這是因?yàn)樗玫馁|(zhì)量值是光度質(zhì)量91性爱视频在线观看，早年得到的早型星系的質(zhì)光比大于晚型星系一個(gè)量級(jí)国产一区在线视频。然而后來(lái)的工作發(fā)現(xiàn)盤星系的質(zhì)光比大約為同一值嘲。后來(lái)有

One side of the disc is defined based on the surface orientation of the disc in the disc storage part.

該盤的一個(gè)側(cè)面根據(jù)收容在盤容納部中的該盤的表面取向來(lái)定義欧美性爱香蕉视频。

Dark rod knife gate valve with disc buried in the body cavity is completely isolated from the external environment, it is suitable for pip which is installed in the swage pool and body is immersed in the liquid . If disc is not isolated from external environment ,disc will be corrupted immediately , so it will affects life of the valve.

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