采用特殊生产工艺得到的多孔炭，表面积可达300-2,000平方米/克。
The use of special manufacturing techniques results in highly porous charcoals that have surface areas of 300-2,000 square metres per gram.
采用特殊生产工艺得到的多孔炭，表面积可达300-2,000平方米/克。
The use of special manufacturing techniques results in highly porous charcoals that have surface areas of 300-2, 000 square metres per gram.
世界上第一台电脑——近30吨埃涅阿克（1947年），使用了18000个电子管，另加1500个继电器以及其它器件，其总体积约90立方米，重达30吨，占地170平方米，需要用一间30多米长的大房间才能存放，是个地地道道的庞然大物。
The first general-purpose computer, the nearly 30-ton ENIAC (1947), contains 18,000 vacuum tubes, 70,000 resistors and 10,000 capacitors.
每平方米在400克至600克之间时，不再有进一步的影响；但是当每平方米超过600克时，覆层就起到遮挡阳光的作用，从而减缓融化的速度。
Between 400 and 600 grams, it has no further effect, but when it exceeds 600 grams, it ACTS as a shield against the sun, and slows down melting.
千克每平方米。
在克拉科夫，每平方米17.96纳克；在纽约，每平方米2.26纳克。
In Krakow, 17.96 nanograms per cubic meter; in New York City, 2.26.
雪上尘埃和黑炭（统称为气溶胶）覆层可能是其中一个因素：当覆层的积累达到每平方米400克的时候，会急剧加快融化的速度；
One factor could be deposits of dust and black carbon (collectively called aerosols) upon the snow, which, up to an accumulation of 400 grams per square meter sharply raises the rate of melting.
纸重：纸的重量，以每平方米重若干克计。
Grammage: Weight of paper expressed as grams per square metre.
中磅粉纸：加上粉剂涂层的机械纸的一个类别，纸质范围在60至85克每平方米之间。
Medium weight coated paper: A category of mechanical coated paper in the substance range 60-85 gsm.
整个结构面积达200平方米，其中的每一部分都由漏斗状的结构支撑，由单向的树脂包层纤维组成，重量仅45千克。
Each piece of the 200-square-metre structure, which is supported by funnel-shaped legs, is formed by a single length of resin-coated fibre and weighs just 45 kilograms.
国家规定：比表面积应大于 300平方米千克，否则为不合格。
The provisions of the state: the specific surface area should be more than 300 square meters/kg, otherwise is unqualified.
加上粉剂涂层的机械纸的一个类别，纸质范围在60至85克每平方米之间。
A category of mechanical coated paper in the substance range 60-85 GSM.
联兴造纸实业有限公司拥有两条造纸生产线，可以生产每平方米45克到120克的本色牛皮包装纸。
Landsing's paper mill has two paper machines. They produce unbleached packaging kraft paper grades, with a substance of 45 to 120 grams per square metre.
克每平方米：英文是克每平方米的缩写：用来表示纸的宣定量。
G. s. m: Abbreviation of grams per square metre:a method ofindicating the substance of paper.
克每平方米：英文是克每平方米的缩写：用来表示纸的宣定量。
G. s. m: Abbreviation of grams per square metre:a method ofindicating the substance of paper.
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