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- Surfaces must be sandblasted. 表面必须喷砂。
- The surface must be thoroughly clean. 表面必须彻底弄清洁。
- The surface must be completely plane. 这表面必须完全平坦。
- The brass surface must be free of contamination. 黄铜表面必须未经沾污。
- The surface must be thoroughly cleaned. 表面必须彻底弄清洁。
- All dirty surfaces must be wiped clean with wet cloths, which must themselves be disposed of as MMVF waste. 所有脏的表面均必须用湿布擦干净（用过的湿布亦应当作MMVF垃圾处理）。
- All reworked surfaces must be shot-peened after removing material damaged by corrosion, heat, and deformation. 所有的翻修表面在去除腐蚀、受热和变形材料后必须进行喷丸。
- The surface must be well prepared before you start to paint. 一定要把表面打磨好再开始粉刷。
- The distance of the water table below the soil surface must be adjusted. 必须调整土壤表面以下水位的距离。
- The formats for the render target and depth stencil surface must be compatible. 呈现目标和深度模具图面的格式必须兼容。
- Soundness of the rock surface must be included in the topographic study. 岩石表面的坚固性，必须包括在地形研究之内。
- Flatness, bevels, and finishes are to be uniform.Blade surfaces must be free from scratches. 平面、斜角及抛光是一个统一体，刀的表面不得有划痕。
- Pipe surfaces must be able to withstand both electrochemical and chemical reactions from the surrounding soil and wastewater conveyed in the pipe. 管子的表面必须能抵抗周围土壤和管子中输送的污水的电化学和化学反应。
- Users can take a sealing test with water pressure of 4MPa and the sealing surfaces must be grinded again if waer escapes. 如果由于运输、保管等原因，可能影响密封性时，用户可进行4Mpa压力的水压密封试验，如果有泄漏应重新研磨密封面。
- The size of the depth stencil surface must be greater than or equal to the size of the render target. 深度模具图面的大小必须大于或等于呈现目标的大小。
- The key to successful sealing of the DISS connection is the extremely smooth finish of the sealing surfaces. These surfaces must be protected to maintain high leak integrity. diss接头成功密封的关键是密封表面的极端平滑。必须保护这些表面，以维持高度的泄露完整性。
- The surface must be free from oil, grease and dirt, and be dry prior to application. 施工表面必须除去油污和灰尘，在施工前务必保持干燥。
- Lubrication may be especially important on extended reach or horizontal wells where the friction between the drill pipe, drill bit and rock surfaces must be kept to a minimum. 对延伸区域或水平油井而言,润滑可能尤为重要,因为在这些地方,钻杆、钻头和岩石表面间的摩擦必须保持在最低水平。
- Prior to coating, surface must be clean, dry, undamaged and free of all contaminants, including salt deposits. 表面必须清洁、干燥、无任何污染物，包括盐分等。
- When your finger is plugged into the Oximeter, your nail surface must be upward. 手指插入时必须让手指甲那一面朝上。
