To avoid any division by zero or overflow, transform all division into multiplication and check for the sign (horizontal lines with Y2=Y1 do not count in the algorithm)
要避免任何数与0 相除或溢出，将所有除法转换为乘法并检查运算符号（Y2=Y1的水平线不会计入算法）
NIBCO Iron Body Check Valves may be installed in both horizontal and vertical lines with upward flow or in any intermediate position.
尼伯科铸铁阀体止回阀可以安装在水平管线或流向朝上的垂直管线中的任何位置上。
This allows our swing check valve to close completely even when installed in a horizontal pipe run with no flow.
这使得我们的旋启式止回阀无论安装在水平管道还是垂直管道上，都能够实现完全的关闭。
Manage and execute APQP and PPAP. Check periodically with suppliers and customers. Report the state of projects and the horizontal coordination job of all internal departments.
管理和执行APQP及PPAP，和供应商及客户一起定期检查、汇报项目状态以及公司内部各部门的横向协调工作。
Swing check valves are used to prevent reversal of flow in horizontal or vertical pipe lines.
旋启式止回阀用于防止水平管路或垂直管路的流体倒流。
NIBCO Check Valves may be installed in both horizontal and vertical lines with upward flow or in any intermediate position.
青铜止回阀可以安装在水平管路或流向朝上的垂直管路中的任何位置。
Globe pattern check valves should be used in horizontal pipe runs with the stem straight up.
截止阀结构的止回阀应该用于水平管道，阀杆垂直朝上。
Triple Eccentric Tilting Disk Check Valves are applicable to mounting in the pipelines both horizontal and vertical.
三偏心斜盘式止回阀是适用于在管道上水平安装或立式安装。
The level of valve lift check valve should be installed in horizontal pipelines.
升降式水平瓣止回阀应安装在水平管道上。
Swing check valves are normally designed for installation in horizontal pipe runs.
旋启式通常适用于安装在水平管道上。
General installation Information: Utility Swing check valves are designed for horizontal installations, but may be installed in up-flow only vertical position.
一般安装信息：实用旋启式止回阀设计用于水平管道安装，但是也可以安装在垂直朝上的位置。
Nibco iron body check valves may be installed in both horizontal and vertical lines with upward flow.
美国尼伯科止回阀可以安装在水平位置，或流向朝上的垂直位置。
Check the Horizontal Center in Container, ensuring the value is set to 0, and click Add 1 Constraint.
检查水平中心的集装箱，以确保该值设置为0，然后单击添加1约束。
Check the Horizontal Center in Container, ensuring the value is set to 0, and click Add 1 Constraint.
检查水平中心的集装箱，以确保该值设置为0，然后单击添加1约束。
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