2、耐磨性能不一样,PU材质的钢丝软管更耐磨,是PVC软管的5倍,所以抽吸颗粒大且高磨损的物料时,PVC软管的寿命就很短了,PU钢丝软管使用寿命长。3、同样壁厚,同样钢丝间距的,PU材质的钢丝软管会更柔软,PVC相对会硬一点,除非PVC里面的增塑剂添加量很多。增塑剂是让PVC变软的一种添加剂,但是目前的食品标准里面对增塑剂...
2 <动物>为食[on]Cows ~ on grass.牛以草为食 Most whales ~ on plankton.大部分鲸鱼以浮游生物为食 cf. LIVE on.3 <原料、燃料等> 装入,流入[机器][into]Oil ~s into the machine through this tubing.油经过这个管子流入机器 be fed up → fed feed back (1) 将<资料>取出[于…][...
Dec. 1994).pdfM-702 Drill String Components (Rev. 2, June. 1999).pdfM-703-CR Casing and tubing materials (Rev. 1, Jan. 1996).pdfM-710 Qualification of non-metallic sealing materials and ..., (Rev. 2, Oct. 2001).pdfM-506r2_IFE_06-2005.xlsM-650r3_Annex_C_empty.do...
3.23.4 The lubricating fittings of journals or bearings shall be readily accessible . Grease fittings shall be gathered at the same place as much as possible by means of stainless steel tubing for convenient lubrication .3.23.4 轴颈或轴承的润滑配件应容易获得。为了方便润滑，应用...
(2)德国ANSEROS安索罗斯臭氧老化箱 SIM 7500型号 (3)德国ANSEROS安索罗斯臭氧老化箱 SIM 6050-T型号 (4)德国ANSEROS安索罗斯臭氧老化箱 SIM 6010-T型号 了解更多关于德国ANSEROS安索罗斯臭氧老化箱以及SAE J1401标准,欢迎致电【400-6808-138】咨询。 已赞过 已踩过< 你对这个回答的评价是? 评论 收起 dong...
为满足膨胀管使用时较大的塑性变形要求,膨胀管管体材料应满足以下几点要求:(1)良好的塑性变形能力;(2)较高的抗拉强度;(3)较低的屈服强度;(4)较高的加工硬化指数;(5)膨胀后管材(膨胀率一般为10%～25%)力学性能应满足API的要求。这为膨胀管在不同膨胀工艺下、不同作业环境中的使用提出了材料选择的基本原则,...
2. (短途)旅行;(乘车)兜风[S]Let's go for a run in the car.咱们去乘汽车兜风吧。3. 路程,航程;路线;班次[S1]4. 连续的演出(展出、刊登)[C]The play had a run of three months.这出戏连续上演了三个月。5. 一连串,连续[S][(+of)]There has been a run of rainy days since Monday.星期...
cation for Seamless and Welded Ferritic/Austenitic Stainless Steel PipeASTM A790 铁素体/奥氏体不锈钢无缝管和焊接管规范ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General ServiceASTM A789 一般用途无缝焊接铁素体和奥氏体不锈钢管规范ASTM...
FRANK: April, a normal woman, a normal sane mother doesn't buy herself a piece of rubber tubing to give herself an abortion so she can, go live out some God damn fantasy. 弗兰克:爱普莉,一个正常的女人,一个正常的理智的母亲,不会买一条橡皮管子给自己做人流,然后自己可以潇潇洒洒地生活在那些...
一、意思不同 1.take a walk意思：散步。例句：I like taking a walk after supper, but I don't like to take a walk tonight.我喜欢饭后散步，但今晚我不想去散步了。2.take walks意思：去散步。例句：I like to take walks on campus and I also enjoy college activities.我爱在校园散步...