A three-way piece which causes the main ear piece, the auxiliary ear piece and the chest piece to communicate is connected in the bottom rubber pipe of the stethoscope for teaching.
该示教听诊器在下胶管中都接有一个将主、副耳件及胸件接通的三通接头。
Our company keep working on high-grade accessories, such as:Lining, interlining, Canvas, Felt, Pocketing, Ban roll&Waist band, Tapes, Ready-chest piece, Sleeve head, Shoulder pad and so on.
我们主要经营国内外高品质的服装辅料，产品包括：里布系列、粘合衬系列、黑碳衬系列、棉绒系列、口袋布系列、腰衬及腰里系列、织带和嵌条系列、成品系列（胸片、弹袖、垫肩）等。
Now take that piece of dangling gold thread and go back and forth over and around the angel, crossing over the chest and back and under the arms to secure it all.
现在用金线绕着天使的胸、背部和臂下来回缠绕。
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