囩囩囡囡
Snorkelling - 是不带氧气筒的活动, 通常在比较浅的海域进行. 人能潜入水中的时间和自身的闭气能力有关, 但是跟多的时候是在水面几公分通过通气管来呼吸. 这样又能想潜水一样的观赏水下面的景观, 又能很自在没有负重. 这项活动只需要参与者能游泳不畏水即可Scuba Diving - 就是真正意义的潜水了, 进行此项运动需要所有的设备装置包括氧气筒。 Scuba Diving 是需要培训和比较专业的知识才能进行的。 这项活动对参与者的要求更高一点, 而且它的专业级别很多。。。从业余的到专业的。。到更高级别做探险的等等。
风荷丽景
JL:给水立管PL:排水立管TL:通气立管RL:热水立管WL:污水立管YL:雨水立管XL:消防立管。。。。。PL-1、2、3、4、5。。。。。 就是第几条的意思每张施工图都有图标的
sanyuan617
1. There was a man who had a sister. 2. His name was Mr Fister. 3. Mr Fister missed his sister. 4. And on his wrist he had a blister. 5. Mr Fister’s sister, who had a lovely vista, 6. Told Mr Fister that a man had kissed her during a twister.1.A big black bear sat on a big black bug. 2. A big black bug bit a big black bear and made the big black bear bleed blood. 3. A big black bug bit a big black dog on his big black nose! 4. A loyal warrior will rarely worry why we rule. 5. A noise annoys an oyster, but a noisy noise annoys an oyster more! 6. Ann and Andy's anniversary is in April. 7. Bake big batches of bitter brown bread. 8. Big black bugs bleed blue black blood but baby black bugs bleed blue blood. 9. Black background, brown background. 10. Blake's black bike's back brake bracket block broke. 11. Blue glue gun, green glue gun. 12. Caution: Wide Right Turns 13. Each Easter Eddie eats eighty Easter eggs. 14. Elizabeth has eleven elves in her elm tree. 15. Elizabeth's birthday is on the third Thursday of this month. 16. Fresh fried fish, Fish fresh fried, Fried fish fresh, Fish fried fresh. 17. Freshly fried fresh flesh 18. Green glass globes glow greenly. 19. He threw three balls. 20. He threw three free throws. 21. Here's an easy game to play. Here's an easy thing to say:22. How many cookies could a good cook cook If a good cook could cook cookies? A good cook could cook as much cookies as a good cook who could cook cookies. 23. How may saws could a see-saw saw if a see-saw could saw saws? 24. How much oil boil can a gum boil boil if a gum boil can boil oil? 25. I thought a thought. But the thought I thought wasn't the thought I thought I thought. If the thought I thought I thought had been the thought I thought, I wouldn't have thought so much. 26. I wish I were what I was when I wished I were what I am. 27. I wish to wish the wish you wish to wish, but if you wish the wish the witch wishes, I won't wish the wish you wish to wish. 28. I wish you were a fish in my dish 29. If two witches would watch two watches, which witch would watch which watch? 30. If you notice this notice, you will notice that this notice is not worth noticing. 31. It's not the cough that carries you off, it's the coffin they carry you off in! 32. Little red lorry33. Miss Smith's fish-sauce shop seldom sells shellfish. 34. Never trouble about trouble until trouble troubles you! 35. Nothing is worth thousands of deaths. 36. Picky people pick Peter Pan Peanut Butter. Peter Pan Peanut is the peanut picky people pick. 37. Ripe white wheat reapers reap ripe white wheat right. 38. She said she should sit. 39. She sells sea shells on the seashore. The seashells she sells are seashells she is sure. 40. Shut up the shutters and sit in the shop. 41. Silly sheep weep and sleep. 42. Six shining cities, six shining cities, six shining cities. 43. Six sick sea-serpents swam the seven seas. 44. Six sleek swans swam swiftly southwards 45. Stupid superstition!46. The batter with the butter is the batter that is better! 47. The great Greek grape growers grow great Greek grapes. 48. The soldier's shoulder surely hurts! 49. There those thousand thinkers were thinking how did the other three thieves go through. 50. There's a sandwich on the sand which was sent by a sane witch. 51. Two tiny tigers take two taxis to town. 52. Very well, very well, very well ... 53. What noise annoys an oyster most? A noisy noise annoys an oyster most. 54. Willie's really weary. How much dew would a dewdrop drop if a dewdrop could drop dew? 如果一颗露珠会掉下露水,那么一颗露珠会掉下多少露水呢? The driver was drunk and drove the doctor's car directly into the deep ditch. 这个司机喝醉了,他把医生的车开进了一个大深沟里。 Sandy sniffed sweet smelling sunflower seeds while sitting beside a swift stream. 桑迪坐在湍急的小溪边尽情地品味着葵花子的香味。 A snow-white swan swam swiftly to catch a slowly-swimming snake in a lake. 湖中一只雪白的天鹅快速地游动着去追赶一条慢慢游动的蛇。A pleasant peasant keeps a pleasant pheasant and both the peasant and the pheasant are having a pleasant time together. 一位和气的农民养了一只伶俐的野鸡,而且这位和气的农民和这只伶俐的野鸡在一起度过了一段很美好的时光。A Finnish fisher named Fisher failed to fish any fish one Friday afternoon and finally he found out a big fissure in his fishing-net.Notes:1. Finnish:芬兰的2. fissure:裂缝Where is the watch I put in my pocket to take to the shop because it had stopped? Bob bought a big bag of buns to bait the bears' babies.Notes:1. bun:小圆面包2. bait:挑逗,逗弄A snow-white swan swiftly to catch a slowly-swimming snake in a lake.Note:1. swan:天鹅2. swiftly:迅速地;快捷地Mr. Cook said to a cook: "Look at this cook-book. It's very good." So the cook took the advice of Mr. Cook and bought the book.A writer named Wright was instructing his little son how to write Wright right. He said: "It is not right to write Wright as 'rite'---try to write Wright aright!"Note:1. rite:仪式;典礼2. aright:正确地Bill's big brother is building a beautiful building between two big brick blocks.Note:1. block:大楼;大厦A flea and a fly were trapped in a flue, and they tried to flee for their life. The flea said to the fly "Let's flee!" and the fly said to the flea "Let's fly!" Finally both the flea and fly managed to flee through a flaw in the flue.Note:1. flea:跳蚤2. trap:设陷阱;诱捕3. flue:烟筒,通气管4. flee:逃跑5. flaw:裂痕;裂缝Peter Piper picked a peck of pickled pepper prepared by his parents and put them in a big paper plate.Note:1. a peck of :许多,大量的2. pickled:腌制的3. pepper:辣椒If a shipshape ship shop stocks six shipshape shop-soiled ships, how many shipshape shop-soiled ships would six shipshape ship shops stock?Note:1. shipshape:井井有条的2. stock:备有;供应3. shop-soiled:在商店放旧了的A monk's monkey mounted a monastery wall munching mashed melon nd melted macaroni. A tall eastern girl named Short long loved a big Mr. Little. But Little, thinking little of Short, loved a little lass named Long. To belittle Long. Short announced She would marry Little before long. This caused Little shortly to marry Long. To make a long story short, did tall Short love big Little less because Little loved little Long more? You sent me your bill, Berry, Before it was due, Berry; Your father, the elder Berry, Isn't such a goose, Berry.
青藤6970
snorkelling和scuba diving的区别:
1、Snorkelling是浮潜,浮在水面上;scuba diving是水肺潜水,要深入水底。
2、Snorkelling是带着潜水面镜(Mask)和呼吸管(Snorkel)浮在水面。
scuba diving背后背一个(甚至多个)气瓶 (Tank)下到水底。
扩展资料:
SCUBA
英语:Self-Contained Underwater Breathing Apparatus,SCUBA),又称水肺潜水、SCUBA DIVING,指潜水员自行携带水下呼吸系统所进行的潜水活动。
其中有开放式(open-circuit)呼吸系统,及封闭式(closed-circuit)呼吸系统,原理都是利用调节器(Regulator)装置把气瓶中的压缩气体转化成可供人体正常呼吸的压力。
计算机专用词汇:Scuba,Facebook的一个非常快速、分布式的内存数据库,用于实时分析和查询。是Facebook的回归分析代码、错误报告监控、广告收入监控和性能调试的背后主力。
snorkel
呼吸管的英文snorkel一字本来是指第二次世界大战时,德国U-潜艇的通气管。通气管让潜艇在潜航状态下可以开动柴油机为电池组充电。
从材质上,根据咬嘴和蛇腹管材质可以分为硅胶呼吸管和pvc呼吸管
从设计结构来分,可分为全湿式、半湿式、全干式,区别就是呼吸管顶部是否有浮力闭气阀或防浪结构。
参考资料:SCUBA-百度百科
参考资料:snorkel-百度百科
毒师999999
在给排水中JL、TL、PL分别是给水立管、通气管立管、排水立管的意思。每张施工图都有图标的。
JL:给水立管PL:排水立管TL:通气立管RL:热水立管WL:污水立管YL:雨水立管
拓展资料:
立管,指呈垂直或与垂线夹角小于45度的管道。
在化工设备中安置的垂直管道都称为立管。
在不同设备中立管的作用是各不相同的,但主要是对设备上部和下部的物料进行输送。例如各种类型的分离塔大部分都有两相逆流流动,立管便可对两个塔板间的物料进行输送。又如流化床反应器内要保证固体颗粒循环运动,在反应器上部收集的颗粒可以通过立管循环器底部,以完成颗粒的循环流动。
参考资料:百度百科:立管