信号工要确保井筒内无人,才能发送升降信号.Signal worker can't send hoisting signal until be ensure that no worker is in it.人员通行,必须通知信号工和卷扬工.It must be advised signal worker and winch operator when personnel is passing by....
Methods Muscle architecture and acetylcholinesterase staining method.方法肌构筑法和乙酰胆碱酯酶整肌染色法.The Acetylcholinesterase membrane fixed by activated carrier had higher enzyme activity and longer life - span.为建立快速的痕量有机磷类的酶法分析方法奠定...
Atrial fibrillation and sinus tachycardia may worsen hemodynamic change and heart function.房颤和窦速加重血流动力学改变和使心功能恶化.Objective To explore the angiographic appearances of the hemodynamic change of spinal dural arteriovenous f...
Wait, please; you betray too much vigor, too much decision; you want more of a shamble.您先别忙; 这可显着太有精神, 太有决断了; 还得再带点儿磨磨蹭蹭的样子才成.Shuffle and shamble indicate moving without lifting the feet completely off the ground.shuffle...