导热性

May send polystyrene to have the nature lightly, moderately-priced, the thermal conductivity to be low, the hygroscopicity is small, electric insulation performance good, sound-insulated, quakeproof, moisture-proof, formation craft simple and so on merits, thus widely serves as profession and so on construction, transportation heat preservation heat insulations, sound-insulated, the earthquake resistance material, to serve as the electric appliance, the measuring appliance, the glass products, the electronic products and so on cushion packing material and the food packing

可发性聚苯乙烯具有质轻、价廉、导热率低、吸水性小、电绝缘性能好、隔音、防震、防潮、成型工艺简单等优点，因而被广泛地用作建筑、交通运输等行业的保温绝热、隔音、抗震材料、用作电器、仪表、玻璃制品、电子产品等的缓冲包装材料和食品包装

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。