Fly buzz--When I died--"
-19세기 영국시-
(1) William Blake(1757-1827) : "The Chimney Sweeper"
from Songs of Innocence
"The Chimney Sweeper"
1 When my mother died I was very young,
2 And my father sold me while yet my tongue,
3 Could scarcely cry weep, weep, weep.
4 So your chimneys I sweep & in soot I sleep.
5 There little Tom Dacre, wh
fly passengers within another nation’s domestic market. In addition, major companies such as British Airways dominated the European airline before the advent of low cost-low frill airlines. In this sense, Ryanair entered an industry with large obstacles to overcome. Nonetheless, it was able to bust the market by operating with low-costs while maintaining profits, differentiating itself with min
Ⅰ. 개요
분말도가 미세한 시멘트 일수록, 응결시간이 빠르게 될수록 블리딩은 적게 된다. 초속경 시멘트는 응결이 매우 빠르기 때문에 블리딩은 거의 발견되지 않는다. 또한 일반적으로 골재가 작을수록 표면적이 크게 되기 때문에 블리딩은 작게 되겠지만, 잔골재의 입경이 작게 될수록 잔골재율을
High German Group(高地독일어)과 Low German Group(低地 독일어)으로 나누는 것이 통례이나, 때로는 the English group과 the German group으로 나누기도 한다. 前者의 분류는 High German語에 엿보이는 음변화를 근거로 한 것이다. 고지(High) 또는 저지(Low)라는 말을 쓴 것은 지리상의 편의성 때문인데, High German Group語 대신에 S
Figure 13 shows that cryo pump is cooling pump. It means this pump is cooling, liquefaction and store air, not pumping. Generally, it has 3 processes like condensation, absorption and trap at low temperature. The cooled air or molecules do not have any momentum so it is no possibility to heat any molecules. It means vacuum.
Cryo pump have High emission velocity and high emission capacity so it