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watertight
watertight, a. (ˈwɔːtətaɪt) [See tight a. 2 a.] 1. a. So closely constructed or fitted that water cannot leak through.1387 Charters etc. Edin. (1871) 35 Thekyt abovyn with stane and water thycht. Ibid. 36 The qwilke werke the forsaide masounys sal warande watir thicht. 1514 Lincoln Wills (1914) I. 6...
Oxford English Dictionary
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watertight
watertightadj1 made or fastened so that water cannot get in or out 防止水进入或流出的; 水密的 a watertight compartment, joint, seal 水密室、 水密接合、水密封.2 (fig 比喻)(a) (of an excuse or alibi) impossible to disprove (指借口或不在犯罪现场的申辩)无懈可击的.(b) (of an agreement) drawn up so that there is no chance of anyone misunderstanding...
牛津英汉双解词典
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H100 - Accessory, watertight hub, Safety Switch, 1.0 in ...
Schneider Electric USA. H100 - Accessory, watertight hub, Safety Switch, 1.0 in hub, zinc plated.
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Ship floodability
Bulkhead watertight compartments improved buoyancy and protected cargo. Development of watertight compartments continued during the Song dynasty in China.
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Please explain how to make watertight electric connections
hi I'm Roy fudge with shoreline marine products I've been a certified marine mechanic for over 25 years and I'm here today as Captain weekend today I'm going to share a variety of easy boating projects that you can do yourself with the common tools that you've probably got in your toolbox right now ...
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Compartment (ship)
Watertight subdivision
Watertight subdivision limits loss of buoyancy and freeboard in the event of damage, and may protect vital machinery from flooding Effective watertight subdivision requires these transverse bulkheads to be both watertight and structurally sound.
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Is there a way to make a watertight model? Is there a spray that may work? This is a specific model for a specific reason. It's shaped like a cylinder and has a recessed bottom. I'm using a Flashforge Adventurer 3 wit...
water tightness:
# Thicker walls
I have experienced that 3 walls and 5 tops/bottoms with an outer shell of Concentric while the core is lines become watertight
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water-fast
ˈwater-fast, a. Sc. = watertight.1550 Abstr. Protocols Town Clerks Glasgow (1894) I. 19 To keip the bwyth wattir fast with haile tymmyr, lofting, and flure. a 1568 Satir. Poems Reform. xlvi. 16 To pomp als oft as ȝe may haill, Ȝeill nevir hald hir watter-fast. 1574 Burgh Rec. Glasgow (1876) 20 For h...
Oxford English Dictionary
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watertight - The Free Dictionary
watertight. ( ˈwɔːtəˌtaɪt) adj. 1. not permitting the passage of water either in or out: a watertight boat. 2. without loopholes: a watertight argument. 3. kept separate from other subjects or influences: different disciplines are often thought of in watertight compartments.
www.thefreedictionary.com
水密隔舱
水密隔舱(Watertight compartments),亦作水密舱室或防水舱,是的安全结构设计,其位于船体内,是船身内部经水密舱壁所区隔划出的多间独立。有学者认为最早见于梁 (南朝)《宋书》关于「八艚舰」的记载。
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Watertight - The Free Dictionary
wa·ter·tight. (wô′tər-tīt′, wŏt′ər-) adj. 1. So tightly made that water cannot enter or escape. 2. Having no flaws or loopholes; impossible to fault, refute, or evade: a watertight alibi; a watertight contract. American Heritage® Dictionary of the English Language, Fifth Edition.
www.thefreedictionary.com
Finding the topological genus of a triangulated surface Given is a surface represented through a triangle mesh (as commonly used in computer graphics, with vertices, edges and faces). The surface is known to be "water...
$2-2g=$ number of vertices - number of edges + number of faces ($g$ is the genus and $2-2g$ is the Euler characteristic). In your case number of edges = $3/2$ times number of faces (triangles).
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水密舱壁
水密舱壁(英语:Watertight Bulkhead),或称隔舱板,是一种提升船舶安全性的造船设计和技术,指的是能将船体区分成许多个,使各互不相通的「防水壁」。 文化价值
联合国教科文组织「保护非物质文化遗产政府间委员会」在2010年11月15日的第五次会议中,以提名档案编号 00321:《中国水密隔舱福船制造技艺》(Watertight-bulkhead technology of Chinese junks)的决议结果,将水密舱壁区划出水密隔舱的造船工法
wikipedia.org
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Binomial coefficients that are powers of 2 I would like a proof that $$ {{n}\choose{k}} = \frac{n!}{k!(n-k)!} = 2^m $$ for $n,k,m\in \mathbb{N}$, only if $k=1$ or $k=n-1$. It seems to me that this must be true since ...
Betrand's Postulate implies that for $n \ge 1$ there is always a prime $p$ with $n If $n \ge 2k$ then at least one of the numbers $n, n - 1, n - 2, \cdots, n - k + 1$ has a prime divisor $p > k$. Hence if $n \ge 2k$, which we can always assume since $\displaystyle \binom{n}{k} = \binom{n}{n - k}$, t...
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Proof. Maximum of the closure is equal to the supremum of the set The exercise is: > Show that if $A \subset \mathbb{R} $ is bounded and $ A \neq \varnothing $ then $sup(A)=max(\overline{A} ).$ Now, I wanted to ask ...
"Further define $\overline{x}=max(\overline{A})$." This is not allowed, as you need to prove that this is well-defined. Not every set has a maximum. Since the standard proof of this is done by showing that it equals the supremum, you end up in a circular reasoning. Some hints for how you should do t...
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