不能返回的

When end surface is neglected, the reflective energy will return to the filament efficiently if the filament is at the centre axis of the columniform lamp shell. 3 Compared with the straight tungsten filament that has a smooth surface, the helical one obtains higher absorbance which can achieve 0.6~0.7 under the actual screw pitch measurement.

当灯的管径为10 mm，而灯丝外径为1.5 mm时，节能可达12%到13%。2）对圆柱形灯外壳，在不考虑端面影响时，光源的灯丝若处于外壳的中心轴上，则反射的能量会有效地返回灯丝。3）螺旋结构的灯丝比表面光滑的直钨丝有更高的吸收率，灯丝绕成螺旋后在现行的螺距尺寸下吸收率能达到

Chorus Girl I'm going out of my mind I miss you so much I don't know what to do Please say it's just a matter of time Until I feel your touch Until you let me come back to you Spoken I think about you girl every day I'm in love And it feels so right I never meant to hurt you Or cause you pain I was just caught up in that lying game But now those days are over I've changed my ways And now I'm counting the minutes I'm counting the days Until you let me come back Till you let me start To find a new way To get back into your heart Girl I'd do anything For one more chance 'Cause I want you I want you back again Chorus You're all that I see All I can see

合唱 我正在离开我的思想的女孩我想念你这么多我不知道该做什么请说现在是确实大约时间直到我感觉你的触觉直到你让我回到你口语的我想你女孩每天我在爱方面而且它觉得这么正确我从不意谓伤害你或引起你痛苦我在那场横躺的游戏中被追赶但是那些数天现在结束我已经改变我的方法而且现在我正在计算数分钟我正在计算那每天直到你让我回来直到你让我开始找一个新的方法拿返回你的心我将会做任何事的女孩对于另外一个机会'引起我想要你我再一次把你想要回来合唱你全都是我见到全部我能见到 http：//xpzone.x.sfbbs.net

In operation, the downhole devices will be laid down with tubings which will move up and down using the operation machine. Since the injection head can rotate in the determined speed, the rotating flow, compared with the conventional stable axial flow, can prevent the sands from depositing in the horizontal annular and washing the screen. The jet form high-efficiency jet nozzle will wash the screen directly with concentrated hydro-power. The working fluid can be clean water, without damage to the formation.

作业时用油管下入该井下装置，利用作业机带动油管上下移动，由于喷头可按照既定速度旋转，返回流体在水平段由常规的平稳轴向流动变为旋转流动，既可实现对防砂管的全方位解堵，又能避免砂粒沉积；高效喷嘴产生的射流直接对着防砂管冲击，能量集中；工作介质为清水，不会对地层带来二次污染。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失