soil dust, road dust, gasoline vehicle emissions, diesel vehicle emissions, point, municipal incinerator, coal-fired power, biomass burning and marine emissions. As a result, vehicle emissions were the largest contributor during this period and averaged approximately 50% of the PM2.5 mass.
1. 서론
지난 수 십년 동안의 도시의 급속한 성장, 인구의 집중, 위성도시의
Consider Surface area of 3cm*3cm
The surface area of a horizontal wire line is
The surface area of a vertical wire line is
Horizon wire line and vertical wire line has each 73 and 400 in 3cm * 3cm. So the entire surface of plate is
The surface of plane stainless steel of 3cm * 3cm is 9cm2, so the surface of wire mesh is 710% of the surface of plane stainless steel.
○3 Produce
curtail
우리말 뜻: 단축하다, 삭감하다
영어 뜻 혹은 유의어: shorten, reduce
예문: During the coal shortage, we must curtail our use of this vital commodity.
cynical
우리말 뜻: 냉소적인, 남을 믿지 않는
영어 뜻 혹은 유의어: skeptical, distrustful of human motives
예문: Cynical at all times, he was suspicious of all altruistic actions of others.
dialectic
우리말 뜻: 논리적 토론술; 변증법
영어 뜻 혹은 유의어: art of debate
예문: I am not skilled in dialectic and, therefore, cannot answer your arguments as
forcefully as I wish.
diaphanous
우리말 뜻: 투명한, 비치는
영어 뜻 혹은 유의어: sheer; transparent
예문: They saw the burglar clearly through the daiphanous curtain.
diatribe
1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine