The causes resulting in cracks in back tube sheet of shell type boilers are analyzed. The mechanism of accidents is stated and some relative solutions to the problem are presented.
分析了锅壳锅炉后管板裂纹产生的原因，阐述了事故发生的机理和处理方法。
I can't see how we'll ever retreat back to technologies that alienate us, just like we won't go back to buying cars that break down a lot or cathode ray tube TVs.
我认为我们不可能回到让人感到疏离的技术上去，就像我们不会再去买常常坏掉的车或者阴极射线管的电视机一样。
This also means having a back up plan, in case one of you is sick, you get a flat tire and have no tube, etc.
这也意味着需要一个后备计划，以防你们中的一个不舒服，你的车胎漏气却没有备胎，等等类似的事情。
If you're staying at a hotel, you'll probably just need a back rack for clothing, maybe food, and of course tools, a spare tube, first aide, anything else you might need out there on the road.
如果你想住宾馆，你或许只要在车后装上行李架，带上衣服、食物、一些工具、自行车内胎、急救箱，还有一些你路上需要的东西。
When we were hip young gunslingers on the NME, we'd take back lemonade bottles for the deposit and use the change for the tube fare to work. When you have a kid, money matters.
当我们还是《新音乐快报》的年轻嬉皮先锋时，还可以捡瓶子卖钱，用来坐地铁上班，但当你有孩子时，钱就是个问题了。
When sound waves enter the cochlea, which is really a tube coiled around, they set a membrane into a back and forth motion and cause a new wave.
当声波进入耳蜗这条盘旋的管道，它令薄膜前后移动并且产生新的波动。
Then one can imagine mirrors at the edges of one's light earth tube that mirror oneself back into oneself and all others back unto themselves.
随之你可以设想在这光明地球管的边缘有镜子，将自己反射回自身，而所有他人反射回他们自身。
Upward motion of the buoy causes a suction which lifts the balls, thus allowing air to be drawn back down the counterweight tube.
浮标的向上运动则产生吸力，可将阀球提起，这样可允许气流受力并返回至配重管。
To see if that You Tube comparison was justified, let's check back in with Imeem one year later and assess how they're doing now.
时隔一年之后，让我们再来看看Imeem的作为，它是否配得上同YouTube的比较？
A thermometer often now, and more often back in the early 1800s, consists of a glass tube up which a column of mercury or alcohol can travel from a reservoir at the base.
现在常见的温度计由一个玻璃管和一个位于底部的贮液槽组成，贮液槽中的水银或酒精沿玻璃管上升形成液柱。
Put the absorbent cotton back into the tube, counterclockwise screw the tube on the cover tightly.
将吸透水的吸水棉放进套管内， 将套管逆时针方向旋紧在顶盖上。
A coffeepot in which boiling water ascends through a central tube and filters back down through a basket of ground coffee beans.
沸腾的水通过中心管子上升并且通过地面上的咖啡豆的篮子过滤下来的咖啡壶。
During this time, the screw moves back while turning to carry out a new proportioning by bringing material melted to the front of the sprue tube.
在这段时间里，螺杆回复到原位，同时旋转以实现下一环节的动作，即将熔化的材料带入进胶管前端。
The squad leader sucks from a tube inside his helmet that connects to a water pack hanging from his back.
班长用头盔内的吸管吸了几口水，这根管子与悬挂在他背上的水袋相连接。
The wall thickness of the tube will be increased with increasing back pressure or increasing friction coefficient.
管材弯曲内外侧壁厚随着反推压力的增大或摩擦系数的增大而增大。
In the test tube you cannot simulate two drinks of alcohol, let the cells recover and come back in 24 hours.
在试管中你不能模拟两杯酒，并且让细胞在24小时内恢复回来。
The system implements the parametric design and drawings of many typical kinds of refrigerating parts, e. x. the plate-tube evaporator, the single back-fin evaporator and the box condenser.
该系统完成了对典型制冷装置的换热器部件，如板管式蒸发器、单脊翅片管式蒸发器、箱壁式冷凝器的参数化设计和绘图；
A steel ball slowly sinks down into a chrome tube and then rises back up like magic, then both objects solidify into a solid piece of metal!
一个钢球慢慢地下沉至一支铭黄管，然后上升起来，之后两者变成一个金属固体。
By adopting the device, the vacuum tube can be always positioned on the back of the bed layer of the catalyst, thereby improving the conveying efficiency.
使用该发明的装置就可以使真空管一直在催化剂床层的背部，从而提高了输送效率。
Workpiece's spring-back is considered in this paper, deformation's history is assured in the next pass, and then square rectangle tube in continue roll forming process lay a foundation.
文中考虑了轧件的弹复，保证了下一道次变形历史的延续，从而为真实模拟方矩形连续辊弯成形过程奠定基础。
Not too small (will be pinch), if too small, you can go to the supermarket look for the middle of a large number of rolls of paper tube and then buy it back!
不要太小(会很夹痛的)，如果太小，你可以去超市找找看中间纸筒大一些的卷纸买回来再用！
Taking the impact jet flow field of individual rocket as research object, this paper calculates the jet flow field near the back of the launching tube by using the numerical simulation method.
该文以单兵火箭冲击射流流场为研究对象，采用数值模拟技术，对定向器管尾附近区域的燃气流场进行了数值计算，给出了发动机工作早期阶段冲击射流噪声场形成过程的计算结果。
Furnace and back-end enclosure wall all adopt membrane wall structure. The outside of tube wall is insulation material and is covered with trapezoid corrugated outer protection plate.
炉膛及尾部包墙均采用膜式壁结构，管壁外侧为保温材料并罩上梯形波纹外护板。
Pressurizing the other side the carriage will travel back the length of the tube.
加压对方的马车将前往阻碍该管的长度。
The catalyst in the discharge tube and the catalyst at the back of the discharge reactor can be the same or different.
放电管中的催化剂与放电反应器后的催化剂可以相同，也可以不同。
The catalyst in the discharge tube and the catalyst at the back of the discharge reactor can be the same or different.
放电管中的催化剂与放电反应器后的催化剂可以相同，也可以不同。
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