你在标签上涂胶了 吗 ?Have you gummed the labels?在使用拉伸聚丙烯薄膜覆膜时,必须在膜上涂胶.In the use of plastic mulch for BOPP film at prbroin gelatinize.涂胶机固化剂系统,为全封闭系统,杜绝了空气的混入.The curative agent system is completely closed and air proof....
水的导热速度比空气快。Water conducts heat faster than air.惯性项和那些与X方向的导热有关的项也被略去.The inertia terms and those relating to conduction in the X direction were also negligible.常用介质有: 水蒸汽 、 导热油 、 热水、冷却水等.The normal media are: steam, ther...
The road is too narrow to allow the passage of gondola.这条街太窄大型货车不能通过.I have a gondola here.我开来了一条平底船.The Venetian gondola is as free and graceful in its gliding movement as a serpent.威尼斯小艇划起来就象蟒蛇一样洒脱自在....