When the precast I beam is tensioned, the lateral displacement tends to take place and will affect the installation, application and safety of the beam.
后张法预应力混凝土I形梁预制张拉时,易产生侧向位移,影响梁片的安装、使用和安全。
Objective To investigate and evaluate the application and safety of high frequency oscillatory ventilation(HFOV) in the treatment of neonates with respiratory failure.
目的探讨高频振荡呼吸机在治疗新生儿呼吸衰竭中的应用价值及其安全性。
The automatic high speed static spin cup spray system is mainly described, which is featured by its ensure of uality coating result and effectiveness, easy application and safety.
着重介绍高速静电旋杯自动喷涂机。 该喷涂设备的涂装性能佳,效率高,使用方便、安全。
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