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1·Some ductless glands produce several different hormones.

有些无管腺产生几种不同的激素。

2·Used in ducted and ductless range hoods and over the counter microwave ovens.

使用在有和无管道式抽油烟机以及柜式微波炉中。

3·Endocrinology is defined as the study of the ductless or endocrine glands and their internal secretions.

内分泌学的定义是：研究无管腺或称内分泌腺及它们的内分泌的科学。

4·This paper describes newly technology trend of component mounter and green technology of ductless reflow furnance.

概述了元件安装机的最新技术动向和无通风管道再流焊炉绿色技术。

5·Inside, cutting-edge technologies such as ductless HVAC systems are paired with wood and metal finishes, such as butcher-block surfaces and sliding barn doors.

尖端的技术，如无管空调系统搭配木材和金属饰面，砧板表面和滑动谷仓门。

6·As an important component of the ductless inductive ventilation system, the jet inducted fan is used more and more widely in ventilation system of underground garage.

射流诱导风机作为实现射流诱导通风方式的主要产品之一，在地下车库等通风系统中得到广泛的应用。

无管的

1·Some ductless glands produce several different hormones.

有些无管腺产生几种不同的激素。