elastic core meaning in Chinese

弹性核心
弹性芯

Product can be classified by raw material as cotton yarn socks , polyamide fiber socks , stretch hosiery with polyamide , high elastic cotton fiber socks with polyamide , cores spandex filament socks , and high elastic core polyamide / spandex filament socks
产品按原料分为棉纱线袜、锦纶丝袜、弹力锦纶丝袜、棉/弹力锦纶丝交织袜、高弹锦纶丝袜、全氨纶包芯丝袜、高弹锦纶丝/氨纶包芯丝交织袜等。