a gram of的意思|示意

Proteins and carbohydrates have about 4 calories a gram, and fats have about 9 calories a gram. Alcohol also is a source of calories, providing about 7 calories a gram.

1克蛋白质和碳水化合物大约含4卡路里能量，脂肪约含9卡，酒精也含有卡路里，大约每克含7卡能量。

At supermarkets here, a 1,000-gram bag of quinoa, just over two pounds, costs the equivalent of $4.85, compared with $1.20 for a bag of noodles the same weight and $1 for a bag of white rice.

在这儿的超市里，1000克一袋的藜麦售价要2英镑多一点，大约相当于4.85美元，对应地，同样重量的一袋面条价格是1.20美元，一袋精米价格是1美元。

A few twentieths of a gram can be critical.

二十分之几克可能是关键的。

One of them combines lithium manganese oxide with other ions, and operates at about three to five volts with a charge capacity of 200 milliamp hours per gram.

平面能源正在研发三种不同的电池化学配方。 其中之一是把锂锰氧化物与其他离子化合，充电电压三到五伏，容量200毫安时每克。

A gram of fat contains twice as many calories as a gram of carbohydrate or protein.

一克脂肪包含的卡路里相当于1克碳水化合物或者蛋白质的2倍。

Women there presented her with a gram of radium for her campaign.

那里的妇女为了支持她的活动赠送给她一克镭。