Discussing several ordinary processing technologies of valve seat ring and valve stem guide hole of cylinder head now.
对目前气缸盖气门座圈和导管孔的几种一般加工工艺进行讨论。
Analyzing the many factors of affecting the processing precision of valve seat ring and valve stem guide hole of cylinder head.
对影响气缸盖气门座圈和气门导管孔的加工精度的诸多因素进行分析。
Last year a group at the University of Minnesota found a way to guide human embryonic stem cells into becoming a potent type of white blood cell which destroys tumour cells.
去年，明尼苏达大学的一个科研小组找出了一种可以引导人类胚胎干细胞，使其转化成强有力白细胞类型的方法，从而破坏肿瘤细胞。
Last year a group at the University of Minnesota found a way to guide into human embryonic stem cells into becoming a potent type of white blood cell which destroys tumour cells.
去年，美国明尼苏达大学的研究小组找到了一种办法，把人类胚胎干细胞引导成一种强有力的白细胞，这种白细胞会破坏肿瘤细胞。
A cover bearing and integral seat bearing guide the stem assembly for precise alignment with the seat.
阀盖轴承和整体阀座轴承引导阀杆总成，实现与阀座的精确定位。
As the shut-off valve is seated, a passage 41 in its stem connects with ports 42 in the guide bushing 37 so as to allow inlet air to pass though the valve stem to a housing port 44.
在关闭阀是坐在座位上，一个通过41个在其干连接与港口42轴套在指南37，使空气入口，虽然通过的阀干，一个住房端口44。
Site index tables regarding Japanese larch in eastern Liaoning were mapped out by using stem analysis guide curve.
采用解析木导向曲线法编制了辽东地区日本落叶松地位指数表。
Once the team had deciphered the genetic signals that guide the development of these cells, they were able to coerce human embryonic stem cells into developing in the same way.
在成功解码指导这些细胞发育的遗传信号的基础上级，研究小组即着手诱导人类胚胎干细胞以同样的方式发育。
Once the team had deciphered the genetic signals that guide the development of these cells, they were able to coerce human embryonic stem cells into developing in the same way.
在成功解码指导这些细胞发育的遗传信号的基础上级，研究小组即着手诱导人类胚胎干细胞以同样的方式发育。
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