Citric acid can be extracted from the juice of oranges, lemons, limes or grapefruit.柠檬酸可以从橙汁、柠檬汁、酸橙汁或者柚子汁中提取。This compartment contains citric acid at a concentration up to 24 times higher than the cytoplasm.这种间隔中所含柠檬酸浓度比...
Ingredients: allantoin, vegetal bacteriolytic - enzyme, glycolic acid, citric acid.成份: 尿囊素 、 植物溶菌酶 、 甘醇酸 、 柠檬酸.Citric acid can be extracted from the juice of oranges, lemons, limes or grapefruit.柠檬酸可以从橙汁、柠檬汁、酸橙汁或者柚子汁中提取。...
整数或字符串等基元类.A primitive class as integer or string.但是对于这些,我们并不需要元类.But we do not need metaclasses for that.然而在这次介绍中,我们将避免元类, 由于它们弊大于利.We will avoid metaclasses in this presentation, however, since they bring more problems...