产品长度系指灯座之长度，不含线材。
Product length mean to the length of lamp holder excluded the wire set.
很少有人使用尼古丁代替类产品超过三到六个月的推荐使用长度。
Few people use them for longer than the recommended three to six months.
吸取的速度取决于产品的粘度和吸取管的长度。
The sucking speed depends on the viscosity of product and length of suction pipe.
该产品通过手工装配，可任意调节使用长度。
This product through the manual setting, may adjust the use length willfully.
该产品通过手工装配，可任意调节使用长度。
This product through the manual setting, may adjust the use length willfully.
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