安装采油树是要对角上紧螺栓。
Make up and tighten the bolts diagonally when the X-tree is installed.
检查是否有泄漏，如果需要，上紧螺栓。
Check if there are leakages. If necessary tighten the bolts.
而更大的螺栓就要匹配更大的螺母，这就意味着需要直径更大的螺栓为上紧螺母创造条件。
A bigger bolt nut must match the larger, which means that larger diameter bolts need to create conditions on the tight nut.
而更大的螺栓就要匹配更大的螺母，这就意味著需要直径更大的螺栓为上紧螺母创造条件。
And the more big bolt will match more nut, which means more need for the bolt diameter to tighten the nut create conditions.
螺母和螺栓应检查上紧。
并按要求步骤对固定螺栓上紧。
Screw tightly the fixed blots according to the required procedures.
介绍了用力矩扳手上紧M64以下螺栓时，如何计算所需要的力矩，并给出原程序和实例。
The article discusses how to calculate the torque needed when torque spanner is used to tighten up bolts up to M64, and give the calculating source program and example.
本实用新型的螺栓只能在封盖扣紧前上紧固定，用任何工具都不能拆卸，所以防盗性能更可靠。
The bolt of the utility model can only be tightened and fixed before the enclosing cover is fastened and can not be dismantled with any tool; therefore the burglar resistant property is more reliable.
本实用新型的螺栓只能在封盖扣紧前上紧固定，用任何工具都不能拆卸，所以防盗性能更可靠。
The bolt of the utility model can only be tightened and fixed before the enclosing cover is fastened and can not be dismantled with any tool; therefore the burglar resistant property is more reliable.
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