持续几十年的挑战之一是难于找到多型腔模具来生产一模一样的部件。
One that has persisted for years is the difficulty of getting multicavity tools to produce identical parts.
持续几十年的挑战之一是难于找到多型腔模具来生产一模一样的部件。
One that has persisted for years (decades, actually) is the difficulty of getting multicavity tools to produce identical parts.
新产品的试模、产品的跟踪、批产后的持续改进、跟踪顾客认可问题等工作；
Mold test of new parts, products following up, continuously improvement of products after batch production, getting products feedbacks from customers, etc.
本发明方法步骤简便，能成功且可重复的建立血清褪黑素水平持续低下动物模 型，具有很好的应用前景。
The method has simple steps, can successfully and repeatedly construct the animal models with continuously-low serum melatonin level and has good application prospect.
试验表明免拆模复合剪力墙在屈服之前表现出良好的承载力，其破坏首先发生在连梁处，破坏时持续的时间较长。
The experiment results show that complex shear walls have excellent bearing capacity before yielding, and the duration between yielding to failure is longer.
试验表明免拆模复合剪力墙在屈服之前表现出良好的承载力，其破坏首先发生在连梁处，破坏时持续的时间较长。
The experiment results show that complex shear walls have excellent bearing capacity before yielding, and the duration between yielding to failure is longer.
应用推荐