Another big push involves stem cell transplant, an extremely risky process in which doctors try to reset the patient's immune system and bypass the glitch that causes scleroderma.
另一项努力就是干细胞抑制，这是一个相当危险的过程，医生尝试将患者的免疫系统复位，以绕过引发硬皮病的干扰因素。
When the handwheel is rotated toward the open position the upper stem is moved away from the diaphragms allowing the spring to push the lower stem away from the seat.
当手轮象开启位置旋转时，上阀杆离开横膈膜，弹簧推动下阀杆离开阀座。
Clippard also offers the captivated push button for use with a large variety of stem operated valves.
Clippard还提供了一种新的干多种经营的大型阀门使用迷住按钮。
Clippard also offers the captivated push button for use with a large variety of stem operated valves.
Clippard还提供了一种新的干多种经营的大型阀门使用迷住按钮。
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