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- Excellent performance of envelop material is the key to technology of sealing up mustered equipments in battlefield. 摘要研发性能优异的封套材料是装备集合封存技术成败的关键。
- The new type deployable airship can adopt new envelop material and frame system, which gives a new way to make high attitude airship low cost. 这种飞艇采用了新型的蒙皮材料和全新的骨架结构设计，并采用独特的升空方式，为超高空飞艇提供了一条全新的解决途径。
- The moisture permeability standard of the field operation ammunition envelop material was reasoned through calculation of the relative humidity in the interior of the envelop. 摘要通过计算封套内部的相对湿度，论证了野战弹药封套材料的透湿率指标。
- The properties of the PVC envelop material modified by CPE was investigated,and the moisture permeability,tensile strength and elongation at break were also tested. 研究了CPE改性PVC封套材料的性能,测试了封套材料的透湿率、拉伸强度和扯断伸长率。
- The properties of the PVC envelop material modified by CPE was investigated, and the moisture permeability, tensile strength and elongation at break were also tested. 摘要研究了CPE改性PVC封套材料的性能，测试了封套材料的透湿率、拉伸强度和拉断伸长率。
- The rim of the plugs is usually not exposed and the enveloping material cannot be ascertained. 岩栓的边缘通常是不露出的，因而不能确定其包裹的物质是什么。
- A kind of typical design of antistatic envelop material seal up 封存
- Have you stuck down the back of the envelope? 信封背面开口处贴牢了吗？
- He steamed the stamp off the envelope. 他用蒸汽把信封上的邮票揭下来。
- The material is flawed throughout. 这种材料到处是裂缝。
- He glued a stamp onto the envelope. 他把邮票贴在信封上。
- As he picked up the envelope, a key dropped out. 他拣起信封时，一把钥匙掉了出来。
- As she picked up the envelope, a key dropped out. 她拾起信封时，一把钥匙掉了出来。
- Put a stamp on the envelope, will you? 在信封上贴张邮票，好吗？
- He stuck a stamp on the envelope. 他在信封上贴上邮票。
- He insists the condition to use the best material. 他坚持以使用最好的材料为条件。
- That material surpasses all others in fineness. 那种材料精良超过其他所有材料。
- The problem is how we are to get the raw material. 问题是我们怎样得到原材料。
- She opened the envelope with her fingertips. 她用指尖弄开了信封。
- Jim is going to get material for a new book. 吉姆正打算为一部新书准备材料。
